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What is a schema in SQL Server?
Is there a schema grant command in Oracle?
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USAGE: For schemas, allows access to objects contained in the specified schema (assuming that the objects' own privilege requirements are also met). Essentially this allows the grantee to "look up" objects within the schema.
Jan 11, 2024 · A database schema is a comprehensive blueprint that formally defines the complete logical structure and organization of data within a Database Management System (DBMS).
- Overview
- Arguments
- Remarks
- Permissions
- Examples
- See Also
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric
Grants permissions on a schema.
permission
Specifies a permission that can be granted on a schema. For a list of the permissions, see the Remarks section later in this topic..
ON SCHEMA :: schema*_name*
Specifies the schema on which the permission is being granted. The scope qualifier :: is required.
database_principal
Specifies the principal to which the permission is being granted. One of the following:
Important
A combination of ALTER and REFERENCE permissions in some cases could allow the grantee to view data or execute unauthorized functions. For example: A user with ALTER permission on a table and REFERENCE permission on a function can create a computed column over a function and have it be executed. In this case, the user must also have SELECT permission on the computed column.
A schema is a database-level securable contained by the database that is its parent in the permissions hierarchy. The most specific and limited permissions that can be granted on a schema are listed below, together with the more general permissions that include them by implication.
Caution
A user with ALTER permission on a schema can use ownership chaining to access securables in other schemas, including securables to which that user is explicitly denied access. This is because ownership chaining bypasses permissions checks on referenced objects when they are owned by the principal that owns the objects that refer to them. A user with ALTER permission on a schema can create procedures, synonyms, and views that are owned by the schema's owner. Those objects will have access (via ownership chaining) to information in other schemas owned by the schema's owner. When possible, you should avoid granting ALTER permission on a schema if the schema's owner also owns other schemas.
For example, this issue may occur in the following scenarios. These scenarios assume that a user, referred as U1, has the ALTER permission on the S1 schema. The U1 user is denied to access a table object, referred as T1, in the schema S2. The S1 schema and the S2 schema are owned by the same owner.
The grantor (or the principal specified with the AS option) must have either the permission itself with GRANT OPTION, or a higher permission that implies the permission being granted.
If using the AS option, these additional requirements apply.
Object owners can grant permissions on the objects they own. Principals with CONTROL permission on a securable can grant permission on that securable.
Grantees of CONTROL SERVER permission, such as members of the sysadmin fixed server role, can grant any permission on any securable in the server. Grantees of CONTROL permission on a database, such as members of the db_owner fixed database role, can grant any permission on any securable in the database. Grantees of CONTROL permission on a schema can grant any permission on any object within the schema.
A. Granting INSERT permission on schema HumanResources to guestB. Granting SELECT permission on schema Person to database user WilJoJun 3, 2024 · Take the time to read what’s available, familiarise yourself with best practices and the latest updates — and in the grand schema of things, you too will have a smoothly running system!
- Lynne Pratt
Jan 6, 2016 · You can GRANT schema permissions that are effective for everything existing and everything that will exist in that schema. Grant Schema Permissions GRANT SELECT, INSERT, UPDATE, DELETE ON SCHEMA :: <schema> TO <user>;
Dec 27, 2023 · Types of Database Schemas. Physical Database Schema. Logical Database Schema. View Database Schema. Star Schema. Snowflake Schema. Best Practices for Database Schema Design. Conclusion. With scale, these specifics become challenging for the end-user as combining the different data sources requires mapping each source into a schema.
Aug 25, 2020 · How to do a GRANT on an entire schema. August 25, 2020. 8 minutes. TL;DR: There is no schema grant command in Oracle, but this routine lets you get close. Update 2024: You’ll be pleased to know that this shortcoming is now addressed in Oracle Database 23ai! See my post for more details.
