Answer / chaudhry

Cold backup is taking backup of all physical files after
normal shutdown of database. We need to take.
- All Data files.
- All Control files.
- All on-line redo log files.
- The init.ora file (Optional)

Define b-trees.

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Which database is good for large data?

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What is the structure of a table in database?

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Which is the best free database software?

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What are the steps in creating a database?

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What do you understand by unique key?

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What is metadata and why should I use it?

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Give the cobol definition of a varchar field 177 when can an insert of a new primary key value threaten referential integrity?

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What do you mean by starvation in dbms?

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What is write ahead logging in DBMS?

0 Answers   HAL,

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IF Statements BLOCK 1 . IF a >= b THEN do_this …..; ELSE do_that….; END IF BLOCK 2 . IF a < b THEN do_that …..; ELSE do_this….; END IF; • Given any pair of non-NULL values for “a” and”b”, will Block 1 and Block 2 do the same thing? • What if either “a” or”b” (or both) is NULL?

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What are the Different Types of Joins and How do They Work?

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