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primary key clustered index oracle. In SQL server while declaring the primary key clustered/non clustered can be I know how to make clustered indexes but making primary key  I think that the closest thing to this in Oracle is an index organized table. When i create a primary key in oracle table, why does it create a clustered index by  OraclePower.com · TechTutorials.net SQL Server 2005 supports two types of indexes clustered index and non-clustered index. Here are the The default index created as part of the primary key column is a clustered index. (Continued on  How to connect Java program to Oracle database 1) Primary key by default creates clustered index while Unique key creates nonclustered  Primary Key and Clustered Index on the Fact Table not applicable if your data warehouse is in other RDBMS like Oracle, DB/2 and Informix. System and User Databases ( Oracle Schema) SQL Server Show Primary- and Foreign Key of a Table Clustered Index with Non Clustered Index Read Microsoft calls them clustered indexes (CI) while Oracle uses the term non clustered indexes because primary key indexes created in Oracle  If no INDEX keyword is specified, as is true in this example, an index cluster is created CREATE TABLE emp ( empno NUMBER(5) PRIMARY KEY, ename You can specify the schema for a clustered table in the CREATE TABLE statement. Q Changing a primary key clustered index to a non-clustered index . Cluster Index in SQL Server is equivalent, in Oracle, to an Index Organized Table (IOT). Oracle creates a clustered index by default for the column. Unique Moreover a table can have more than one UNIQUE key but not more than one Primary key. Support for clustered/nonclustered indexes and primary keys CORE-1988 - Reported size for Oracle NVARCHAR2 columns is wrong 

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