Oracle Database Partition Function details

Oracle partitioning improves the manageability, performance, and availability of many applications. Through the partition function, you can further segment the table, index, and index organization table to more accurately manage and access these database objects. Oracle provides a wide range of partitioning solutions to meet each business requirement.

In addition, partitions in SQL statements are completely transparent, so this function can be applied to almost any application.

Advantages of the Partition Function

By improving manageability, performance, and availability, the partitioning function brings great benefits to various applications. In general, partitions can greatly improve the performance of some queries and maintenance operations. In addition, partitions can greatly simplify common management tasks. Through partitioning, database designers and administrators can solve some of the challenges posed by cutting-edge applications. Partitioning is a key tool for building a gigabit data system or an ultra-high availability system.

Basic knowledge about the Partition Function

The partition function further segments a table, index, or index organization table. The segments of these database objects are called partitions. Each partition has its own name, and you can select its own storage features. From the perspective of the database administrator, the objects in a partition have multiple segments, which can be managed collectively or separately. This makes the database administrator quite flexible in managing the objects after the partition. However, from the perspective of the application, the partitioned table is exactly the same as the non-partitioned table. You do not need to modify it when using the SQL DML command to access the partitioned table.

Table partitions are implemented through the "partition key". The partition key refers to some columns that determine the partition of a row. Oracle Database 10 Gb provides six techniques for partitioning tables:

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