How To Find Schema Owner In Sql Server

Updated date Jun 08, 2019

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This article explains schemas in SQL Server. A SQL schema in a database is a collection of logical structures of data.

Introduction

A schema in a SQL database is a collection of logical structures of information. The schema is owned by a database user and has the aforementioned name as the database user. From SQL Server 2005, a schema is an independent entity (container of objects) dissimilar from the user who creates that object. In other words, schemas are very similar to separate namespaces or containers that are used to store database objects. Security permissions can be applied to schemas hence schemas are an important tool for separating and protecting database objects on the footing of user access rights. It improves flexibility for security-related administration of the database.

User schema separation

Before SQL Server 2005, database object owners and users were the same things and database objects (table, index, view and then on) were owned by the user. In other words database objects were straight linked to the user and the user could not delete them without removing the database object that were associated with the user. In SQL Server 2005, a schema separation is introduced, now the database object is no longer owned by a user, group or role. The schema can exist endemic by the user, group or part. The schema tin can take multiple owners. The schema ownership is transferrable. Database objects are created inside the schema. Now the user can be dropped without the dropping of the database object owned by the user. But the schema cannot be deleted if it contains a database object.

The following are advantages of user schema separation:

The schema buying is transferrable.
Database objects tin be moved amidst the schemas.
A single schema can be shared among multiple users.
A user can be dropped without dropping the database objects associated with the user.
Provides more than control of access and level of access.

Default schema

The default schema is the starting time schema searched when resolving object names. The user tin be defined within the default schema. Using the "SCHEMA_NAME" function we can determine the default schema for the database.

result

The schema tin exist fabricated the default for the user by defining DEFAULT_SCHEMA with CREATE USER or Modify USER. If there is no default schema defined then SQL will assume "DBO" as the default schema. Note that in that location is no default schema associated with a user if the user is authenticated as a member of the group in the Windows operating organisation. In this instance a new schema will be created and the name is the aforementioned as the user name.

Advantages of using Schema

Human activity as object protection tool: A schema can exist a very effective object projection tool combined with the appropriate level of user permissions. A DBA can maintain control admission to an object that would be very crucial.
Managing a logical grouping of database objects within a database: Schemas allow database objects to be organized into a logical group. This would be advantagous when multiple teams are working on the same database application and the design team wants to maintain integrity of the database tables.
Easy to maintain the database: A schema allows a logical grouping of the database objects, and so the schema can aid u.s. in situations where the database object name is the same only falls in a different logical grouping.

Other Advantages

A unmarried schema tin can be shared amid multiple databases and database users.
A database user tin can exist dropped without dropping database objects.
Manipulation of and admission to the object is at present very complex and more secure. The schema acts as an boosted layer of security.
Database objects can be moved amidst schemas.
The ownership of schemas is transferable.

Decision

A schema is a very useful database concept and helps us to separate database users from the database object owners and too helps to create a logical group of database objects.