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Purpose of Schema

Jonathan Brotto 440 Reputation points
2024-09-11T15:07:16.7566667+00:00

What is the purpose of schema? I am a BA like to be more technically knowledgeable.

SQL Server | SQL Server Transact-SQL
Developer technologies | Transact-SQL
Developer technologies | Transact-SQL

A Microsoft extension to the ANSI SQL language that includes procedural programming, local variables, and various support functions.

SQL Server | Other
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  1. Olaf Helper 47,616 Reputation points
    2024-09-11T15:14:49.9466667+00:00

    A schema is a kind of organization unit to

    • combine objects as one unit
    • can have objects with same name in different schemas
    • easier assignment of permissions

    See https://learn.microsoft.com/en-us/sql/relational-databases/security/authentication-access/create-a-database-schema?view=sql-server-ver16

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  1. LiHongMSFT-4306 31,621 Reputation points
    2024-09-12T02:21:03.5433333+00:00

    Hi @Jonathan Brotto

    The most straightforward purpose of SQL schema is to create a namespace for database objects, which helps avoid name collisions. It allows multiple users of a given database to create their own tables (or other objects), without having to worry about the existence of similarly named objects possibly introduced by other users, like Sales.Orders and Feedback.Orders.

    Also, Schema allows you to control access to groups of objects. For example, you can grant or deny permissions to the entire schema, simplifying security management efforts compared to individual objects.

    For tasks like backup and restore, it is simplifier to manage and maintain database objects if they're in the same schema.

    In summary, the schema in SQL Server helps to efficiently manage database objects, enhance security management, and prevent naming conflicts.

    Best regards,

    Cosmog


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