discuss about myisam index statistics collection. : Sql dba

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I have 2 packages A and B. Now package A references Package B and Package B references Package A. How do you compile such inter-dependent objects in PL/SQL

5 Answers   Doyensys, Infosys, Metric Stream,

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what does myisamchk do? : Sql dba

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What is a common use of group by in sql?

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How many rows will return from dual table?

4 Answers   Fujitsu,

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how do you login to mysql using unix shell? : Sql dba

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What are two virtual tables available during database trigger execution ?

2 Answers  

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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?

2 Answers  

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What is the difference between inner join and left join?

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Explain the advantages and disadvantages of stored procedure?

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how can we encrypt and decrypt a data present in a mysql table using mysql? : Sql dba

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How do temporal tables work?

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