Oracle DBA - Pseudocolumns


	Oracle DBA - Pseudocolumns

vinitjain

7-14-2009 7:41 PM

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tags:

pseudocolumns, currval and nextval, level, rowid, rownum, sql, sql tutorial, plsql tutorial, oracle dba tutorial, oracle dba

vinitjain says:

A pseudocolumn behaves like a table column, but is not actually stored in the table. You can select from pseudocolumns, but you cannot insert, update, or delete their values

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A pseudocolumn behaves like a table column, but is not actually stored in the table. You can select from pseudocolumns, but you cannot insert, update, or delete their values. This section describes these pseudocolumns:</DIV><BR /><DIV>
* CURRVAL and NEXTVAL</DIV><BR /><DIV>
* LEVEL</DIV><BR /><DIV>
* ROWID</DIV><BR /><DIV>
* ROWNUM</DIV>
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