Oracle pl sql developer interview questions and answers
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#Oracle pl sql developer interview questions and answers update#
If changes are made to the tables and these tables are the base tables of a view, then the changes will be reference on the view.Ĭan A View Be Updated/inserted/deleted? If Yes - Under What Conditions?Ī View can be updated/deleted/inserted if it has only one base table if the view is based on columns from one or more tables then insert, update and delete is not possible. If A View On A Single Base Table Is Manipulated Will The Changes Be Reflected On The Base Table? SYSDATE, USER, UID, CURVAL, NEXTVAL, ROWID, ROWNUM What Is The Maximum Number Of Triggers, Can Apply To A Single Table? Hexaware Technologies Most Frequently Asked Latest Oracle Interview Questions Answers When A Query Is Sent To The Database And An Index Is Not Being Used, What Type Of Execution Is Taking Place? Index can be created on one or more columns of a table. An index is an optional structure associated with a table to have direct access to rows, which can be created to increase the performance of data retrieval.