SQL Server Integration Services: Difference between revisions

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The SSIS Import/Export [[Wizard (software)|Wizard]] lets the user create packages that move data from a single data source to a destination with no transformations. The Wizard can quickly move data from a variety of source types to a variety of destination types, including text files and other SQL Server instances.

Developers tasked with creating or maintaining SSIS packages use a visual development tool based on [[Microsoft Visual Studio]] called the SQL Server [[Business Intelligence Development Studio]] (BIDS). It allows users to edit SSIS packages using a drag-and-drop user interface. A scripting environment for writing programming code is also available in the tool. A package holds a variety of elements that define a workflow. Upon package execution, the tool provides color-coded real-time monitoring. (Note: In more recent versions MS SQL Server, BIDS has been replaced with "SQL Server Data Tools - Business Intelligence" (SSDT-BI).<ref>{{Cite web|url=http://sqlmag.com/sql-server-2014/q-where-business-intelligence-development-studio-bids-sql-server-2014|title = IT Pro}}</ref><ref>{{Cite web|url=http://blogs.msdn.com/b/analysisservices/archive/2013/03/06/sql-server-data-tools-business-intelligence-for-visual-studio-2012-released-online.aspx|title=DevBlogs}}</ref>)

; Connections: A connection includes the information necessary to connect to a particular data source. Tasks can reference the connection by its name, allowing the details of the connection to be changed or configured at run time.

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; Tasks: A task is an atomic work unit that performs some action. There are a couple of dozen tasks that ship in the box, ranging from the file system task (that can copy or move files) to the data transformation task. The data transformation task actually copies data; it implements the [[Extract, transform, load|ETL]] features of the product

; Variables: Tasks may reference variables to store results, make decisions, or affect their configuration.

; Streamlined Data Integration: SSIS offers a visual interface and pre-built components to simplify the process of extracting data from various sources, transforming it, and loading it into target destinations. This reduces development time and effort compared to writing custom code. <ref>{{cite web | url = https://techunwrapped.com/ssis-816-definition/ | title = SSIS-816: Definition, History, and ETL Capabilities |work=Techunwrapped | date = 6 September 2024 | publisher = Techunwrapped.com}}</ref>

A package may be saved to a file or to a store with a hierarchical namespace within a SQL Server instance. In either case, the package content is persisted in [[XML]].

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===Features of the data flow task===

[[File:SSIS workflow.png|thumb|An example of a SQL Server Integration Services (SSIS) workflow, by visually programming the steps needed to transform data from source to destination.|alt=Diagram with seven nodes. 1: OLE DB Source (Source Table), flows to 3: Sort Source Table, flows to 5: Merge Join. Another flow goes from 2: OLE DB Source (Dest Table), flows to 4: Sort Dest Table, flows to 5: Merge Join. From 5: Merge Join, the flow goes to 6: Conditional Split, flows to 7: OLE DB Destination.]]

SSIS provides the following built-in transformations:<ref>{{cite web | title = Integration Services Transformations | url = http://msdn.microsoft.com/en-us/library/ms141713.aspx|work=Microsoft Developer Network | publisher = Microsoft | access-date = 22 March 2013}}</ref>

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* Aggregation

* Audit

* Cache Transformtransform<ref>{{cite web | url = http://msdn.microsoft.com/en-us/library/bb895264 | title = Cache Transform|work=Microsoft Developer Network | publisher = Microsoft | access-date = 22 March 2013}}</ref>

* Copy/Map

* Data Conversionconversion

* Data Miningmining Modelmodel Trainingtraining

* Data Miningmining Queryquery

* Dimension Processingprocessing

* [[Derived Columncolumn]]

* Export &and Importimport Columncolumn

* For loop Containercontainer

* Foreach Looploop Containercontainer

* ([[Fuzzy_logic|Fuzzy]]) Lookuplookup

* [[Fuzzy_logic|Fuzzy]] Groupinggrouping

* OLE DB Commandcommand

* Partition Processingprocessing

* Percentage Samplingsampling<ref>{{cite web | url = http://msdn.microsoft.com/en-us/library/ms139864.aspx | title = Percentage Sampling Transformation|work=Microsoft Developer Network | publisher = Microsoft | access-date = 22 March 2013}}</ref>

* [[Pivot table|Pivot]]

* [[Pivot table|Unpivot]]

* Row Countcount

* Row Samplingsampling

* Row Samplingsampling Transformationtransformation

* Script Componentcomponent

* [[Slowly Changingchanging Dimensiondimension]]

* [[Term extraction]]

* Term Lookup

{{div col end}}

The Conditionalconditional Splitsplit transformation is used to conditionally route rows to other transformation objects based on a particular condition. It is similar to the "<code>[[conditional (programming)|if … else]]</code>" construct in the C language.

=={{Anchor|A-tools}}Other included tools==