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What is a Schema in SQL and how to create it?

Last updated on May 22,2024 102.7K Views

Aayushi Johari
A technophile with a passion for unraveling the intricate tapestry of the... A technophile with a passion for unraveling the intricate tapestry of the tech world. I've spent over a decade exploring the fascinating world of...
9 / 37 Blog from Introduction to SQL

Ever heard about the term Schema? Well, a schema in SQL is a collection of database objects linked with a particular database username. The username that I am talking about is called the Schema owner, or more appropriately the owner of the related group of objects. Let us dig this topic a bit deeper and discuss it in detail!
The agenda for this tutorial is as follows:

Let’s begin.

What is SQL?

As you all might be aware of the term SQL, stands for the Structured Query Language. SQL is an ASI standard language but there are many different versions of this language. SQL is the standard language for Relational Database System. It helps you in accessing and manipulating databases. Several queries against the database can be executed. The data from a database can be retrieved. You can insert, update, or delete records from a database. It helps in creating new databases. New tables and views can also be created.

Let’s move further to the next segment.

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What is a Schema in SQL Server?

A Schema in SQL is a collection of database objects associated with a database. The username of a database is called a Schema owner (owner of logically grouped structures of data). Schema always belong to a single database whereas a database can have single or multiple schemas. Also, it is also very similar to separate namespaces or containers, which stores database objects. It includes various database objects including your tables,  views, procedures, index, etc.

Let’s move ahead and look at some of the advantages of using Schema in SQL.

Advantages of using Schema

  • You can apply security permissions for separating and protecting database objects based on user access rights.
  • A logical group of database objects can be managed within a database. Schemas play an important role in allowing the database objects to be organized into these logical groups.
  • The schema also helps in situations where the database object name is the same. But these objects fall under different logical groups.
  • A single schema can be used in multiple databases.
  • The schema also helps in adding security.
  • It helps in manipulating and accessing the objects which otherwise is a complex method.
  • You can also transfer the ownership of several schemas.
  • The objects created in the database can be moved among schemas.

    These were few advantages, now the next topic is the method to create a schema.

    How to create a Schema?

    Syntax to create SQL:

    CREATE SCHEMA [schema_name] [AUTHORIZATION owner_name]
    [DEFAULT CHARACTER SET char_set_name]
    [PATH schema_name[, ...]]
    [ ANSI CREATE statements [...] ]
    [ ANSI GRANT statements [...] ];

    You can create a schema using SQL server management studio. Follow the mentioned steps!

    For details, You can even check out how to manage databases on SQL Server and its concepts with the SQL Course Online.

    Using SQL Server Management Studio

    Follow the steps in order to create a schema.

    • In object explorer, click on the databases folder.
    • Create the New database schema under database.
    • Right click Security folder, click New, select Schema.
    • Go on Schema-New dialog box, enter a specific name that you want to create for your new schema.
    • In the schema owner box, enter the name of the database user in order to own the schema. Click search, to open the Search Roles and User dialogue box.
    • Click OK.

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    This is how a schema is created. Now let us see how a schema is altered.

    How to alter a Schema?

    The schema in a database can be altered by using the alter schema statement. This statement is specifically used to rename a schema. The new owner must be a pre-existing user.

    Syntax to alter a schema:

    ALTER SCHEMA schema_name [RENAME TO new_schema_name] [ OWNER TO new_user_name]





    new name of the schema


    existing schema


    new owner of the schema

    After understanding how to alter schema let us move ahead to the next segment. We are going to study about dropping a schema.

    How to drop a Schema?

    In order to drop schema we use the following syntax:

    DROP SCHEMA <schema name>

    If you have to drop the entire database follow the mentioned syntax:

    DROP DATABASE databasename;

    This was all about Schema in SQL. I hope that the content explains the above-added value to your knowledge. Keep reading, keep exploring!

    With this, we come to an end to this article. I hope you understood how to use the various constraints present in the database. If you wish to learn more about MySQL and get to know this open-source relational database, then check out our MySQL DBA Certification Training which comes with instructor-led live training and real-life project experience. This training will help you understand MySQL in-depth and help you achieve mastery over the subject.

    Got a question for us? Please mention it in the comments section of this article on SQL Constraints and I will get back to you.

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    What is a Schema in SQL and how to create it?