How do I find duplicates in sql?

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Define SQL and state the differences between SQL and other conventional programming Languages?

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Is sql better than access?

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How would you go about increasing the buffer cache hit ratio? 0. Explain the difference between a hot backup and a cold backup and the benefits associated with each 1. You have just had to restore from backup and do not have any control files. How would you go about bringing up this database? 2. How do you switch from an init.ora file to a spfile? 3. Explain the difference between a data block, an extent and a segment. 4. Give two examples of how you might determine the structure of the table DEPT. 5. Where would you look for errors from the database engine? 6. Compare and contrast TRUNCATE and DELETE for a table. 7. Give the reasoning behind using an index. 8. Give the two types of tables involved in producing a star schema and the type of data they hold. 9. What type of index should you use on a fact table? 10. Give two examples of referential integrity constraints. 11. A table is classified as a parent table and you want to drop and re-create it. How would you do this without affecting the children tables? 12. Explain the difference between ARCHIVELOG mode and NOARCHIVELOG mode and the benefits and disadvantages to each. 13. What command would you use to create a backup control file? 14. Give the stages of instance startup to a usable state where normal users may access it. 15. What column differentiates the V$ views to the GV$ views and how? 16. How would you go about generating an EXPLAIN plan?

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What is pl sql and why it is used for?

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What is procedure in pl sql?

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What is out parameter used for eventhough return statement can also be used in pl/sql?

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What is pivot table in sql?

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What is the difference between clustered and non-clustered indexes?

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What is cursor explain with example?

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Differences between UNIQUE and DISTINCT in select statements

26 Answers   ABS, DELL, Deloitte, Hewitt, Oracle, Verinon Technology Solutions, Wipro,

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what is log shipping? : Sql dba

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