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Oracle Interview Questions And Answers
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The default file extensions indicate the library module type and storage format .pll - pl/sql library module binary Master Detail 21. What is a master detail relationship? A master detail relationship is an association between two base table blocks- a master block and a detail block. The relationship between the blocks reflects a primary key to foreign key relationship between the tables on which the blocks are based. 22. What is coordination Event? Any event that makes a different record in the master block the current record is a coordination causing event. 23. What are the two phases of block coordination? There are two phases of block coordination: the clear phase and the population phase. During, the clear phase, Oracle Forms navigates internally to the detail block and flushes the obsolete detail records. During the population phase, Oracle Forms issues a SELECT statement to repopulate the detail block with detail records associated witjh the new master record. These operations are accomplished through the execution of triggers. 24. What are Most Common types of Complex master-detail relationships? There are three most common types of complex master-detail relationships: master with dependent details master with independent details detail with two masters 25. What are the different types of Delete details we can establish in Master-Details? Cascade Isolate Non-isolote 26. What are the different defaust triggers created when Master Deletes Property is set to Non-isolated? Master Delets Property Resulting Triggers ---------------------------------------------------- Non-Isolated(the default) On-Check-Delete-Master On-Clear-Details On-Populate-Details 26. Whar are the different default triggers created when Master Deletes Property is set to Cascade? Ans: Master Deletes Property Resulting Triggers --------------------------------------------------- Cascading On-Clear-Details On-Populate-Details |