What is the difference between schema and tablespace?

What is the difference between schema and tablespace?

A schema is a namespace – a logical thing. It is used to organize the names of database objects. It has nothing to do with the way the data is stored. A tablespace is a physical thing.

What is the difference between database and schema in Oracle?

The fundamental difference between them is that the database is an organized collection of interrelated data or information about the considered object. In contrast, the schema is a logical representation or description of an entire database.

Is index a schema object?

Overview of Schema Objects A schema is a collection of schema objects. Examples of schema objects include tables, views, sequences, synonyms, indexes, clusters, database links, procedures, and packages.

Which of the following objects is not contained in a schema?

Other types of objects are also stored in the database and can be created and manipulated with SQL but are not contained in a schema: Contexts. Directories. Profiles.

Can a schema have multiple databases?

In the Oracle database system, the term database schema, which is also known as “SQL schema,” has a different meaning. Here, a database can have multiple schemas (or “schemata,” if you’re feeling fancy). Each one contains all the objects created by a specific database user.

Is schema different from database?

A database is the main container, it contains the data and log files, and all the schemas within it. You always back up a database, it is a discrete unit on its own. Schemas are like folders within a database, and are mainly used to group logical objects together, which leads to ease of setting permissions by schema.

Is user and schema same in Oracle?

In Oracle, users and schemas are essentially the same thing. You can consider that a user is the account you use to connect to a database, and a schema is the set of objects (tables, views, etc.) that belong to that account.

Is package a schema object?

A package is a schema object that groups logically related PL/SQL types, variables, constants, subprograms, cursors, and exceptions. A package is compiled and stored in the database, where many applications can share its contents.

How many types of database objects are there in Oracle?

For modeling multi-valued attributes and many-to-many relationships, Oracle Database supports two collection data types: varrays and nested tables.

What are the different types of database objects in Oracle?

Oracle database objects

  • Tables. Oracle stores information in the form of tables.
  • Indexes. Indexing is a concept of listing of keywords accompanied by the location of information of the subject.
  • Views.
  • Synonyms.
  • Sequences.
  • Partitions.
  • Clusters.
  • Stored procedures and packages.

What is the difference between a tablespace and a schema?

It has nothing to do with the way the data is stored. A tablespace is a physical thing. It’s a container for data and has nothing to do with the logical organization of the database objects. A single object (e.g. a table) could be spread across multiple tablespaces (depending on the DBMS being used) but it can only be defined in a single schema.

What is a schema in Oracle Database?

In Oracle Database, a database schema is a collection of logical data structures, or schema objects [i.e. related tables]. A database schema is owned by a database user and has the same name as the user name.

What are tablespaces in Oracle Database?

Any schema objects assigned to that tablespace then get located in the specified storage location. Tablespaces also provide a unit of backup and recovery. The backup and recovery features of Oracle Database enable you to back up or recover at the tablespace level. Table 6-1 describes some tablespaces included in the database.

What is the difference between a schema and an object?

A schema is owned by a database user and has the same name as that user. Schema objects are the logical structures that directly refer to the database’s data. Schema objects include structures like tables, views, and indexes. (There is no relationship between a tablespace and a schema.

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