SSIS : Create a basic package and implement a lookup logic

Category: Tutorial


Posted on 2019-03-19, by perica123.

Description

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SSIS : Create a basic package and implement a lookup logic
.MP4 | Video: 1280x720, 30 fps(r) | Audio: AAC, 48000 Hz, 2ch | 861 MB
Duration: 2 hours | Genre: eLearning Video | Language: English

Learn to create a new SSIS Package with data flow and lookup


What you'll learn

Install Visual Studio
Install SQL Server
Install SQL Server Data Tools -SSDT
Download and attach sample database
Create a new SSIS Package
Perform a lookup on data
Reference data from OLE DB source.
Perform Lookup transformation.
Setup OLE DB connection manager
Write data to cache

Requirements

Basic knowledge of Databases
Basic knowledge of RDBMS eg Microsoft SQL Server
Exposure to visual studio
Basic SQL knowledge

Description

SSIS allows you to perform a lookup on data in the course of a task, using referenced data from any OLE DB source. It is a useful feature that enables you to check on the validity of data, or interpret it before proceeding.

There might be times when developing a SQL Server Integration Services (SSIS) package that you want to perform a lookup in order to supplement or validate the data in your data flow. A lookup lets you access data related to your current dataset without having to create a special structure to support that access.

To facilitate the ability to perform lookups, SSIS includes the Lookup transformation, which provides the mechanism necessary to access and retrieve data from a secondary dataset. The transformation works by joining the primary dataset (the input data) to the secondary dataset (the referenced data). SSIS attempts to perform an equi-join based on one or more matching columns in the input and referenced datasets, just like you would join two tables in in a SQL Server database.

Because SSIS uses an equi-join, each row of the input dataset must match at least one row in the referenced dataset. The rows are considered matching if the values in the joined columns are equal. By default, if an input row cannot be joined to a referenced row, the Lookup transformation treats the row as an error. However, you can override the default behavior by configuring the transformation to instead redirect any rows without a match to a specific output. If an input row matches multiple rows in the referenced dataset, the transformation uses only the first row. The way in which the other rows are treated depends on how the transformation is configured.

The Lookup transformation lets you access a referenced dataset either through an OLE DB connection manager or through a Cache connection manager. The Cache connection manager accesses the dataset held in an in-memory cache store throughout the duration of the package execution. You can also persist the cache to a cache file (.caw) so it can be available to multiple packages or be deployed to several computers.

In this course we will create an SSIS package and implement a lookup logic to it.

Who this course is for:

Beginners to SSIS
Beginner data analyst
Beginner data scientist

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