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Oracle Tutorials - Types of Tables Supported by Oracle
(Continued from previous topic...)
How Many Types of Tables Supported by Oracle?
Oracle supports 4 types of tables based on how data is organized in storage:
- Ordinary (heap-organized) table - This is the basic, general purpose type of table.
Its data is stored as an unordered collection (heap)
- Clustered table - A clustered table is a table that is part of a cluster. A cluster is a
group of tables that share the same data blocks because they share
common columns and are often used together.
- Index-organized table - Unlike an ordinary (heap-organized) table, data for an
index-organized table is stored in a B-tree index structure in a
primary key sorted manner. Besides storing the primary key
column values of an index-organized table row, each index entry in
the B-tree stores the nonkey column values as well.
- Partitioned table - Partitioned tables allow your data to be broken down into smaller,
more manageable pieces called partitions, or even subpartitions.
Each partition can be managed individually, and can operate
independently of the other partitions, thus providing a structure
that can be better tuned for availability and performance.
(Continued on next topic...)
- What Is a Database Table?
- How Many Types of Tables Supported by Oracle?
- How To Create a New Table in Your Schema?
- How To Create a New Table by Selecting Rows from Another Table?
- How To Rename an Existing Table?
- How To Drop an Existing Table?
- How To Add a New Column to an Existing Table?
- How To Add a New Column to an Existing Table with a Default Value?
- How To Rename a Column in an Existing Table?
- How To Delete a Column in an Existing Table?
- How To View All Columns in an Existing Table?
- How To Recover a Dropped Table?
- What Is Recycle Bin?
- How To Turn On or Off Recycle Bin for the Instance?
- How To View the Dropped Tables in Your Recycle Bin?
- How To Empty Your Recycle Bin?
- How To Turn On or Off Recycle Bin for the Session?
- How To List All Tables in Your Schema?