Docs
ServoyCloudSupportSamplesOpen SourceCommunity
  • Home
  • GUIDES
    • Platform Overview
    • Get Servoy
    • Get Started
      • Chapter 0
      • Chapter 1
      • Chapter 2
      • Chapter 3
      • Chapter 4
      • Chapter 5
    • Get Help
      • SuLA Instructions
      • SuLA Terms
    • Develop
      • Application Design
        • Forms
          • Layout Management
            • Simple Layout
            • Fully Responsive
              • Bootstrap 12-Grid
              • Flexbox
              • Custom Div
              • Collapsible Container
              • Simple Collapsible
              • Center Container
              • Inline Group Container
            • Abstract Form
          • Form Containers
            • Form Container
            • Tab Panel
            • Split Pane
            • Collapse
            • Accordion Panel
            • Form Component
            • List Form Component
          • Form Inheritance
          • Form Components
        • UI Components
          • Buttons and Text
            • Badge
            • Button
            • Data Label
            • Dropdown
            • Image
            • Label
          • Grids
            • Data Grid
            • Power Grid
            • Table
          • Input Controls
            • Calendar
            • Calendar Inline
            • Checkbox
            • Choice Group
            • Combobox
            • Group Buttons
            • Html Area
            • Input Group
            • Rating
            • Slider
            • Switch
            • Spinner
            • TextArea
            • Textbox
            • TextBoxGroup
            • Type Ahead
            • select2tokenizer
          • Media
            • Carousel
            • Embedded YouTube
            • File upload
            • Image label
            • Lightbox Gallery
            • MultiFile Upload
            • PDF JS Viewer
            • PDF Viewer
          • Mobile
            • Native Data List
            • Native Select
          • Navigation
            • Breadcrumbs
            • Navbar
            • sidenav
          • Visualization
            • DBTreeview
            • Progress Bar
            • Treeview
            • ChartJS
              • Data Labels Plugin
              • Funnel Chart
              • OutLabels Plugin
              • TreeMap
          • Specialized Components
            • Smart Document Editor
            • Servoy PDF Viewer
            • Fullcalendar Component
              • Fullcalendar
              • Fullcalendar Events
              • Migrating calendar from Smart and Web client to NG client
            • Fullcalendar Component 2
            • Canvas
            • Google Charts
            • Google Maps
            • svySignature
            • svywebcam
        • Styling and Themes
          • Default Theme Properties
          • CSS / LESS
          • Component Variants
          • Font Icons
        • Data Modeling
          • Databases
            • Tables
              • Columns
              • Calculations
              • Aggregations
              • Methods
              • Events / Triggers
              • Table security
            • Views
            • Procedures
          • Relations
          • Value Lists
          • Menus
          • In-Memory Databases
          • View Datasource
        • Modular Design
      • Programming Guide
        • Scripting the UI
          • Scripting Forms
          • Interacting with Components
          • Navigation
          • Windows, Dialogs and Popups
          • Events Manager
        • Working with Data
          • Concepts
          • Loading
          • Sorting
          • Iterating
          • Searching
            • Find mode
            • Query Builder
            • SQL String
          • Filtering
          • Editing
          • Validation
        • Automation and Scheduling
          • Batch Processor
          • Headless API
          • Scheduler API
        • Creating REST APIs
        • Consuming Webservices
        • Working with Files
          • File Plugin Basics
          • Images
          • Excel
          • PDF
          • JSON
        • Browser Utilities
          • Notifications
            • Web Notifications (Toastr)
            • Web Notifications (Native)
            • Block UI
          • Session Management
          • Keyboard Utilities
          • NG Utils
        • Sending and Receiving Email
        • Servoy Jasper Reports
          • Input Type
          • Display Mode
          • Output format
          • Jaspe Reports Viewer
        • Extensions
          • Modules
            • svyPhonegap
              • First Use Guide
              • Barcode Scanner
              • Browser
              • Camera
              • File
              • Fingerprint
              • Location
              • Network Interface
              • Phonegap
              • Printer
              • Push Notifications
            • svyAPI
              • Getting Started
            • svyLookup
              • Custom Templates
              • API Documentation
              • svyLookup v1
                • API Documentation v1.0.0
                • Base Form svyLookupTable v1.0.0
                • Base Form AbstractLookup v1.0.0
            • svyNavigation
              • API Documentation
                • API svyNavigation
                • API svyNavigationHistory
                • API svyNavigationUX
            • svyPopupFilter
              • Simple Filter Pickers
              • Custom Templates
              • API Documentation
                • API svyToolbarFilter
                • API svyPopupFilter
              • API Documentation v1
                • API svyToolbarFilter v1
                • API svyPopupFilter v1
            • svySearch
            • svySecurity
              • Overview
              • Token-based Auth and SSO (NEW!)
              • API Documentation
              • Getting Started
              • Tenant replication
              • Security Management Console
                • Classic Security Management Console
              • svySecurityUX
              • svyProperties
              • API Doc svyProperties
            • svyUtils
              • Log Manager
              • Log Manager Appenders
              • Smart Doc Editor Utils
              • Custom Dialogs
              • Excel Utils
                • Full API Reference
              • Crypto Utils
      • Security
        • Authentication
        • Permissions
          • UI Permissions
          • Data Permissions
          • Runtime Permissions
        • Audit Logging
        • OAuth
        • JWT
      • Multi-Language Support
      • Mobile Development
        • Getting Started
        • Mobile Design
        • Native Mobile Integrations
        • Building a Native Binary for the App Store
      • Native Desktop Development
        • NGDesktop UI plugin
        • NGDesktop Utils
        • NGDesktop File Plugin
    • Deploy
      • WAR Deployment
      • Docker Deployment
      • Server Configuration
        • Server Settings
        • Server Plugins
        • Database Servers
          • Locks
          • Transactions
          • Oracle
          • SQLServer
        • Client Sessions
        • Batch Processors
        • License Management
        • Monitoring
          • Server Log
          • Browser Console Log
          • Websocket Log
          • Query Performance
          • Client Performance
          • Client Event Tracing
          • Monitoring Servoy with JMX
      • NGClient deployment
      • Troubleshooting
      • Other Topics
        • Security: Cross-site Scripting
        • Running in an iFrame
    • Extend
    • Contribute
  • Reference
    • Servoy Core
      • Object Model
        • Database Server
          • Table
            • Column
            • Calculation
            • Method
            • Aggregation
          • View
          • Procedure
        • Solution
          • Form
          • Form Component
          • Relation
          • Relation Item
          • Table Node
          • Value List
          • Menu
          • Menu item
          • In-Memory Data Source
          • View Foundset Data Source
          • Variable
          • Column Info
          • Media
          • Layout Container
          • Method
        • i18n Message Key
      • Developer API
        • Globals
        • Forms
          • RuntimeForm
            • controller
            • containers
              • RuntimeContainer
            • elements
              • Component
              • RuntimeAccordionPanel
              • RuntimeBean
              • RuntimeButton
              • RuntimeCalendar
              • RuntimeCheck
              • RuntimeCombobox
              • RuntimeComponent
              • RuntimeDataButton
              • RuntimeDataLabel
              • RuntimeGroup
              • RuntimeHtmlArea
              • RuntimeImageMedia
              • RuntimeInsetList
              • RuntimeLabel
              • RuntimeListBox
              • RuntimePassword
              • RuntimePortal
              • RuntimeRadio
              • RuntimeChecks
              • RuntimeRadios
              • RuntimeRectangle
              • RuntimeRtfArea
              • RuntimeSpinner
              • RuntimeSplitPane
              • RuntimeTabPanel
              • RuntimeTextArea
              • RuntimeTextField
              • RuntimeWebComponent
        • JS Lib
          • Array
          • BigInt
          • Boolean
          • Date
          • Function
          • IterableValue
          • Iterator
          • JSON
          • Map
          • Set
          • Math
          • Namespace
          • Number
          • Object
          • Promise
          • QName
          • RegExp
          • Special Operators
          • Statements
          • String
          • XML
          • XMLList
        • Application
          • APPLICATION_TYPES
          • CLIENTDESIGN
          • DRAGNDROP
          • ELEMENT_TYPES
          • LOGGINGLEVEL
          • NGCONSTANTS
          • UICONSTANTS
          • CSSPosition
          • JSDimension
          • JSDNDEvent
          • JSEvent
          • JSLogger
          • JSLogBuilder
          • JSPoint
          • JSUpload
          • JSWindow
          • JSBounds
          • Renderable
          • UUID
        • SolutionModel
          • ALIGNMENT
          • ANCHOR
          • BEVELTYPE
          • CURSOR
          • DEFAULTS
          • FONTSTYLE
          • MEDIAOPTION
          • PAGEORIENTATION
          • PRINTSLIDING
          • SCROLLBAR
          • TITLEJUSTIFICATION
          • TITLEPOSITION
          • UNITS
          • JSBean
          • JSButton
          • JSCalculation
          • JSComponent
          • JSDataSourceNode
          • JSField
          • JSForm
          • JSLabel
          • JSMedia
          • JSMethod
          • JSPart
          • JSPortal
          • JSRelation
          • JSRelationItem
          • JSStyle
          • JSTab
          • JSTabPanel
          • JSValueList
          • JSVariable
          • JSTitle
          • JSChecks
          • JSCombobox
          • JSHeader
          • JSInsetList
          • JSList
          • JSPassword
          • JSRadios
          • JSText
          • JSTextArea
          • JSWebComponent
          • JSLayoutContainer
        • Database Manager
          • QUERY_COLUMN_TYPES
          • SQL_ACTION_TYPES
          • JSColumn
          • JSDataSet
          • JSBaseRecord
          • JSBaseSqlRecord
          • JSBaseFoundset
          • JSBaseSQLFoundset
          • JSFoundSet
          • JSFoundSetUpdater
          • JSRecord
          • JSRecordMarker
          • JSRecordMarkers
          • JSTable
          • JSTableFilter
          • MenuFoundSet
          • MenuItemRecord
          • QBAggregate
          • QBAggregates
          • QBCase
          • QBCaseWhen
          • QBColumn
          • QBColumns
          • QBCondition
          • QBFunction
          • QBFunctions
          • QBGroupBy
          • QBJoin
          • QBJoins
          • QBLogicalCondition
          • QBParameter
          • QBParameters
          • QBPart
          • QBResult
          • QBSearchedCaseExpression
          • QBSelect
          • QBSort
          • QBSorts
          • QBTableClause
          • QBWhereCondition
          • ViewFoundSet
          • ViewRecord
        • Events Manager
          • EVENTS_AGGREGATION_TYPES
          • EventType
        • Menus
          • JSMenu
          • JSMenuItem
        • JSMenuDatasource
        • Utils
        • Client Utils
          • JSBlobLoaderBuilder
        • History
        • Security
        • i18n
        • ServoyException
          • DataException
        • JSUnit
        • Datasources
          • DBDataSource
          • DBDataSourceServer
          • JSConnectionDefinition
          • JSDataSource
          • MemDataSource
          • MenuDataSource
          • SPDataSource
          • SPDataSourceServer
          • ViewDataSource
        • JSViewDatasource
        • servoyDeveloper
        • enum
    • Extensions
      • UI Components
        • Buttons and Text
          • Badge
          • Button
          • Data Label
          • Drop Down
          • Image
          • Label
        • Form Containers
          • Accordion Panel
          • Collapse
          • Form Container
          • Form Component Container
          • List Form Component
          • Default Loading Indicator
          • Error Bean
          • Portal
          • Responsive Container
          • Servoy Default Navigator
          • Slider
          • Split Pane
          • TabPanel
        • Grids
          • Data Grid
          • Power Grid
          • Table
        • Input Controls
          • Calendar
          • Calendar Inline
          • Checkbox
          • Choice Group
          • Combobox
          • Floatinglabel Calendar
          • Floatinglabel Combobox
          • Floatinglabel Textarea
          • Floatinglabel Textbox
          • Floatinglabel Type Ahead
          • Group Buttons
          • Html Area
          • Input Group
          • Rating
          • Select2tokenizer
          • Slider
          • Spinner
          • Switch
          • TextArea
          • TextBox
          • TextBox Group
          • Type Ahead
        • Media
          • Carousel
          • Embedded YouTube
          • File upload
          • Image label
          • Lightbox Gallery
          • MultiFile Upload
          • PDF JS Viewer
          • PDF Viewer
        • Mobile
          • Native Data List
          • Native Select
        • Navigation
          • Breadcrumbs
          • Navbar
          • sidenav
        • SmartDocEditor
          • Smart Document Editor
        • Visualization
          • Canvas
          • Chart
          • Custom List
          • DBTreeview
          • Foundset List
          • Fullcalendar
          • Gauge
          • Google Maps
          • Kanban
          • Progress Bar
          • Treeview
      • Server Plugins
        • amortization
          • AmortizationCalculation
          • Polynomial
        • clientmanager
          • Broadcaster
          • JSClientInformation (cm)
        • excelxport
        • file
          • JSFile
          • JSProgressMonitor
        • headlessclient
          • JSClient
        • http
          • HTTP_STATUS
          • Cookie
          • DeleteRequest
          • GetRequest
          • HeadRequest
          • HttpClient
          • HttpClientConfig
          • OptionsRequest
          • PostRequest
          • PutRequest
          • Response
          • TraceRequest
          • PatchRequest
          • JSFileUpload
        • images
          • JSImage
        • jwt
          • Algorithm
          • Builder
          • JWTClaims
        • mail
          • Attachment
          • MailMessage
        • maintenance
          • JSClientInformation
          • JSColumnObject
          • JSServer
          • JSTableObject
        • mobileservice
          • OfflineDataDescription
        • oauth
          • ClientAuthentication
          • CustomApiBuilder
          • OAuthProviders
          • OAuthRequest
          • OAuthResponse
          • OAuthResponseBinary
          • OAuthResponseJSON
          • OAuthResponseText
          • OAuthService
          • OAuthServiceBuilder
          • OAuthTokenExtractors
          • RequestType
        • pdf_output
        • rawSQL
        • RestWs plugin
        • rest_ws
          • WsContents
          • WsCookie
          • WsRequest
          • WsResponse
        • scheduler
        • serialize
        • textxport
          • DataProviderExport
          • TabExporter
        • udp
          • JSPacket
        • XmlReader
          • XmlNode
      • Browser Plugins
        • Block UI
        • Block UI (ref)
        • Dialogs Plugin
        • Idle
        • Idle (ref)
        • Key Listener
        • Key Listener (ref)
        • NGDesktop File
        • NGDesktop File (ref)
        • NGDesktop UI (ref)
        • NGDesktop Utils (ref)
        • NG Utils (ref)
        • Office Javascript API for Servoy
        • Phonegap
        • Web Notifications (Native)
        • Web Notifications (Toastr)
        • Window Plugin
        • Font Awesome
      • Modules
        • Smart Doc Editor Utils
        • svyAPI
          • Getting Started
        • svyLookup
          • Custom Templates
          • API Documentation
          • svyLookup v1
            • API Documentation v1.0.0
            • Base Form svyLookupTable v1.0.0
            • Base Form AbstractLookup v1.0.0
        • svyLookupExample
        • svyNavigation
          • API Documentation
            • API svyNavigation
            • API svyNavigationHistory
            • API svyNavigationUX
        • svyNavigationUX
        • svyNavigationUXSample
        • svyPopupFilter
          • Simple Filter Pickers
          • Custom Templates
          • API Documentation
            • API svyToolbarFilter
            • API svyPopupFilter
          • API Documentation v1
            • API svyToolbarFilter v1
            • API svyPopupFilter v1
        • svyProperties
        • svySearch
        • svySecurity
          • Overview
          • Token-based Auth and SSO (NEW!)
          • API Documentation
          • Getting Started
          • Tenant replication
          • Security Management Console
            • Classic Security Management Console
          • svySecurityUX
          • svyProperties
          • API Doc svyProperties
        • svySecurityConsole
        • svySecurityUX
        • svyUtils
          • Log Manager
          • Log Manager Appenders
          • Smart Doc Editor Utils
          • Custom Dialogs
          • Excel Utils
          • Full API Reference
          • Crypto Utils
        • svyUtils$Excel
        • svyUtils$NGClient
        • svyUtils$customDialogs
        • svyUtils$logManagerAppenders
        • svyUtils$tableGrid
      • Layout
        • Boostrap 12grid layout
          • Collapsible Container
          • Simple Collapsible
          • Center Container
          • Inline Group Container
          • Flexbox Layout
      • Solutions
        • Sample Application
          • Tutorial Part 1
          • Tutorial Part 2
      • Packages
        • UI Component Packages
          • Advanced Renderers
          • Bootstrap Components
          • Bootstrap Extra Components
          • Canvas
          • Chart JS
          • Fullcalendar Component
          • googlemaps
          • kanban
          • Servoy Core
          • Servoy Extra Components
          • Servoy NG-Grids
          • Servoy PDF Viewer
          • smartDocumentEditor
        • Browser Plugin Packages
          • Block UI
          • Core NG only Services
          • Key Listener
          • NGDesktop File
          • NGDesktop UI
          • NGDesktop Utils
          • Web Notifications
          • Idle Web Service
    • Servoy Developer
      • Menu
        • File
        • Edit
        • Source
        • Refactor
        • Navigate
        • Search
        • Project
        • Actions
        • Run
        • Window
        • Help
      • Toolbar
      • Solution Explorer
        • Resources
          • Database Servers
            • Database Server
              • Procedures
              • Tables
              • Views
          • Security
          • i18n
        • All Solutions
          • Solution
          • Active Solution
            • Scopes
              • Scope
                • Variables
            • Forms
              • Working Set
              • Form
                • Controller
                • Variables
                • Elements
                • Relations
            • Form Components
              • Form Component
            • Relations
              • Relation
            • ValueLists
              • ValueList
            • Menus
              • Menu
                • MenuItem
            • Media
              • Folder
              • File
            • DataSources
              • In Memory DataSources
                • In Memory DataSource
              • View Foundsets DataSources
                • View Foundset DataSources
            • Servoy Packages
              • Package
            • Modules
              • Module
        • Solution Explorer Contextual List
      • Views
        • Command Console
        • Console
        • Problems
        • Tasks
        • Bookmarks
        • Search
        • Form Hierarchy
        • Help
        • JUnit
        • Outline
        • Profiler
        • Properties
        • Project Explorer
        • Call Hierarchy
      • Editors and Wizards
        • Property configurator for columns
        • Relation Editor
        • Text Format Editor
        • Date Format Editor
        • Number Format Editor
        • Database Synchronization Wizard
        • Security Editor
        • SQL Editor
        • i18n Editor
        • File Import Wizard
        • File Export Wizard
        • WAR Export Wizard
        • NGDesktop Export Wizard
        • Table Editor
        • Metadata Synchronization Wizard
        • Database Server Connection Editor
        • Text Property Editor
        • Valuelist Editor
        • Form Editor
          • Parts of the Form Editor
          • Designing a Form
          • Layout Tools
          • Using Containers
          • Creating and Using Forms
          • Using Servoy Beans
          • Using Shapes
          • Form Editor Subtabs
          • [Tips and Shortcuts][reference/servoy-developer/object-editors/form-editor-tips_and_shortcuts.md]
          • Editong a Responsive LayoutForm
          • CSS Positioning
        • Form Hierarchy
        • Component Properties Editor
        • Variable Editor
        • Method Selection Wizard
        • New Solution Wizard
        • Application Event Types Editor
        • New Form Wizard
        • Form Dataproviders Configurator
        • Servoy Resource Locator
        • Datasource Selection Wizard
        • Sorting Fields Wizard
        • Scripting Editor
          • Getting Started-Overview of Script Editor
          • Code Writing Features
          • Code Navigation
          • Code Rewriting Tools
          • Refactoring
          • Code Formatting
          • Script Editor Tips and Shortcuts
          • Unit Tests
        • Theme Editor
          • General Properties
          • Sidenav Properties
          • Navbar Properties
          • Tabs Properties
          • Windows Properties
          • Dialogs Properties
          • Tables Properties
          • Breadcrumb specific style Properties
          • Brand colors Properties
          • Validations Properties
          • Margins and Padding Properties
        • Editor Selection
        • Run Configurations
        • Debug Configurations
        • Externalize Strings Wizard
        • Font Chooser Wizard
        • Color Chooser Wizard
        • Project Properties Configurator
        • Move Wizard
        • External Tools Configurations
        • About Servoy Developer
        • Servoy Developer Installation Details
        • Eclipse Marketplace Wizard
        • Install Available Software Wizard
        • Cheat Sheet Selection Wizard
        • Servoy Developer Help Wizard
        • Switch to Editor Wizard
        • Find Actions Wizard
        • Customize Perspective Configurator
        • Quick Search Wizard
        • Search Wizard
        • Encoding Wizard
        • Task Wizard
        • Find - Replace Wizard
        • Properties Editor
        • New Project Wizard
        • New Method Wizard
        • New Menu Wizard
          • New MenuItem Wizard
        • Menu Editor
        • ServoyMenu Selection Wizard
        • JSMenu compatible component selector
        • Permissions Configuration Dialog
      • Project File Structure
        • Servoy Installation Directory
          • servoy.properties
        • Workspace Folder
          • Resources Directory
            • Database Information (.dbi) Files
          • Solution Folder
      • Package Manager
      • Preferences
      • Property Types for components / services
      • Debugger
        • Debug Explorer
        • Breakpoints
          • Breakpoint Properties
        • Variables
        • Expressions
        • Interactive Console
    • Application Server
    • Servoy Cloud
      • Cloud Control Center
        • Home
          • Setup Namespace
          • User profile
            • My Profile
            • Support
        • Download IDE
        • Application Overview
          • Applications
            • Pipelines
              • Jobs
                • Packages
                  • Commits
                  • Artifacts
                  • Configuration
                  • Quality reports
                  • Build markers
                • Job Configuration
                  • Build and Deploy or Build
                  • Mobile
                  • Desktop
            • Environments
              • Metrics
                • Users
                • Databases
                  • Metrics
                • System Health
                • Log Activity
                • App performance
                • Query performance
              • Cloud reporting
            • Security
              • Permissions
              • Tenants
            • Reports
            • Security Login Designer
              • Single Sign-On
                • Sign in with Google
                • Sign in with Microsoft
          • Code Repositories
        • Project Management
          • Tickets
          • Backlog
          • Active Sprints
        • User Management
          • Users
          • Roles
        • Administration
          • Security
            • ServoyCloud Roles
          • Credentials
          • Settings
        • Add-Ons
      • Database Backup
      • E2E Cypress Testing
        • Using Cypress
      • On-Premise Deployment
      • Privacy policy (ServoyAI)
      • FAQ
      • Migrate to Servoy Cloud
    • Extensions Developement
      • Component and Services
        • Component Development
        • Service Development
        • Tools and Dev Tips to use for Component/Service developement
        • Manifest (.mf file)
        • Specification (.spec file)
          • Property Types
            • Array property types
            • Custom object property types
            • Findmode property type
            • Foundset property type
            • Tags
        • Directives And Filters
          • Sablotabsequence
        • Console (serverside)
        • ServoyApi (serverside)
      • Serverside Plugins
        • Data Convertors and Validators
        • UI Convertors
  • Release notes
    • Release notes
      • 2025.03
      • 2024.03 (LTS)
      • 2023.03 (LTS)
      • 2025.03 (Servoy Cloud)
      • 2024.12
      • 2024.12 (Servoy Cloud)
      • 2024.09
      • 2024.09 (Servoy Cloud)
      • 2024.06
      • 2024.06 (Servoy Cloud)
      • 2024.03 (Servoy Cloud)
      • 2023.12
      • 2023.12 (Servoy Cloud)
      • 2023.09
      • 2023.09 (Servoy Cloud)
      • 2023.06
      • 2022.03 (LTS)
      • 2022.12 What's new
      • 2022.12
      • 2022.09 What's new
      • 2022.09
      • 2022.06 What's new
      • 2022.06
      • 2021.03.3 (LTS)
Powered by GitBook
On this page
  • Overview
  • Database Connectivity
  • Data Binding
  • Data Operations
  • The Foundset

Was this helpful?

  1. GUIDES
  2. Develop
  3. Programming Guide
  4. Working with Data

Concepts

PreviousWorking with DataNextLoading

Last updated 8 months ago

Was this helpful?

Overview

Servoy provides a robust and flexible platform for handling data within business applications. This chapter introduces the key concepts for understanding how Servoy manages data and how developers can interact with it effectively.

Database Connectivity

At its core, Servoy is a comprehensive platform for developing database-driven applications. Servoy allows developers to connect to any standard Relational Database Management System (RDBMS) using Java Database Connectivity (JDBC) technology. JDBC is a connectivity standard that allows Java-based applications to interact transparently with any database vendor that provides a compliant driver.

Key Points:

Query Engine

The Servoy platform uses Structured Query Language (SQL) to issue requests to databases. While traditional database application development requires advanced SQL knowledge, Servoy dynamically generates all the SQL required to read and write data, optimizing queries and ensuring database neutrality. Developers can still write their own SQL for complex scenarios if desired. This capability provides flexibility while ensuring efficiency and portability.

Named Connections

Developers specify a Server Name that maps to a specific database connection configuration, including user credentials and database URLs. At runtime, Servoy creates a pool of connections for the given Server Name, which are reused for the duration of the application server uptime. This insulates developers from the complexities of database connections and improves application performance by reducing the overhead associated with creating and closing database connections.

See for more information. See Database Server Connection Editor for more information.

Switching Connections

Servoy allows applications to between different database connections programmatically. This is particularly useful in multi-tenant applications where each tenant might have their own database, or in scenarios where different types of data are stored in different databases.

Connection Pooling

Connection pooling is a technique used to maintain a cache of database connections that can be reused, improving performance and resource utilization. Servoy manages a of database connections for each Server Name, ensuring efficient use of database resources and reducing the latency associated with establishing new connections.

Data Binding

Data binding in Servoy refers to the association between the user interface (UI) components and the underlying data models. This concept allows for seamless synchronization between the UI and the data, ensuring that any changes in the data are automatically reflected in the UI and vice versa.

Key Points:

Dynamic Data Binding

Servoy provides both a Graphical User Interface (GUI) and an Application Program Interface (API) that dynamically bind to database resources. The Servoy Application Server dynamically generates and issues the SQL required to read, insert, update, and delete database records in response to user actions and developer instructions.

Example: When a user navigates to a form bound to a database table, the Servoy Application Server issues a SQL select statement to retrieve and display the data. If a user modifies a value in a text field and clicks out, the server issues a SQL update command to save the changes, broadcasting them to other connected clients.

Client Cache

Servoy clients maintain a cache of database records to optimize performance. This client cache keeps track of records in use by primary key, reducing the number of database queries. Cached records are automatically updated or reloaded as needed, enhancing user experience by allowing quick navigation and data access.

Data Broadcasting

Updating the Client Cache

Client caches may become "stale" if data changes outside of Servoy client sessions. Servoy provides several APIs to update client caches programmatically:

Data Operations

Data operations in Servoy refer to in-memory transactions and should not be confused with database transactions. These in-memory transactions track changes made to data before they are committed to the database.

Key Points:

Auto Save: ON

By default, every Servoy client starts with Auto Save set to on/true. This means changes are committed automatically as the user navigates the client session. Specific actions, like clicking in a form's area, navigating to a different form, or clicking a button, trigger a save event.

Auto Save: OFF

When Auto Save is set to off/false, the length of the in-memory transaction is controlled by the developer. Changes are not committed until the developer programmatically invokes a save event. This is ideal for scenarios where a group of edits may be saved or rolled back together.

The Anatomy of the In-Memory Transaction

Servoy provides a data API that tracks all added or modified records and their changed columns, including former and latter values. This allows developers to distinguish between new records not yet in the database and existing records with pending edits.

Saving Data Changes

A developer can programmatically issue a save event to commit the in-memory transaction to the database. This can be done for all changes or for specific records. If any records cannot be saved due to errors, these are tracked separately.

Rolling Back Data Changes

A developer can issue a rollback command to revert all changes in the in-memory transaction. Alternatively, rollbacks can be applied to specific records, leaving the rest of the transaction unaffected.

Deleting Records

Record deletions are not part of the in-memory transaction. When a record is deleted, the instruction is sent to the database immediately and cannot be rolled back.

The Foundset

The Servoy Foundset is a key component in Servoy's data binding layer. A foundset maps to a single database table (or view) and manages reading and writing data to that table. It controls which records are loaded, displayed, created, edited, and deleted.

Key Points:

Forms Bound to a Foundset

A Servoy Form is bound to a single database table and contains a single foundset bound to that table. Actions in the UI, such as editing data fields, affect the form's foundset, and vice versa.

Shared Foundsets

Forms bound to the same table share the same foundset, providing a unified view of data across different forms.

Named Foundsets

Developers can create named foundsets for specific scenarios where forms need different subsets of the same data table.

Loading Records

This flexibility allows developers to meet specific application needs efficiently.

Sorting

Scrolling Result Set

Scrolling result sets handle large datasets efficiently by loading data incrementally as needed.

Iterating Over a Foundset

Foundsets and Data Broadcasting

Changes to data in one part of the application are automatically propagated to all parts using the same foundset, ensuring data consistency.

Related Foundsets

Performing Batch Updates

Batch updates allow developers to apply changes to multiple records in a single operation, improving performance and ensuring consistency.

When a record is inserted, updated, or deleted by any Servoy client, the Servoy Application Server broadcasts a event to all clients. This ensures that all clients have a real-time, shared view of the data. Developers can enhance this functionality by implementing the solution's onDataBroadcast event handler.

: Refreshes all records in all client caches for a specified database table, ideal after significant external changes.

: Sends a data broadcast event for specific records, useful for targeted updates.

: Refreshes the cache for a single record or entire foundset in the calling client, ideal for localized changes.

in Servoy happen inside an in-memory transaction. When a record is created or modified, either by user action or by the developer, nothing is committed to the database immediately. The Servoy Client tracks all newly created and modified records, including which columns have changed, and their former and latter values. These changes accrue in the in-memory transaction until they are committed or rolled back.

Records can be into a foundset in various ways:

: Load a record by its primary key.

: Load records based on specified primary key data.

: Copy the query of another foundset.

: Use a query builder object to set the foundset's query.

: Use a SQL query fragment to set the foundset's query.

Foundsets can be programmatically using SQL-like syntax to present data in the desired order.

Developers can over records in a foundset using standard loop constructs for batch operations or complex data manipulations.

Related foundsets manage related data across different tables, leveraging defined to navigate and manipulate related records.

See for more information.

Data Broadcast
Flush All Client Caches
Notify Data Change
iterate
JSFoundSetUpdater
Refresh Record from Database
relationships
sorted
switch
Databases
pool
Data manipulations
loaded
Load by Single PK
Load by PK Data Set
Load by Another Foundset
Load by Query: QBSelect
Load by Query: SQL String