What are some emotional triggers?

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If 100 tables are there in user_tables.I want to find in which table zero records are there with table name.Is it possible?

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How would you reference column values before and after you have inserted and deleted triggers?

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difference between pl/sql table and normal pl/sql table

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Can a varchar be a primary key?

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What is a sql statement?

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Does view contain data?

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how do you know the version of your mysql server? : Sql dba

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I have done oracle 10g. I need a project knowledge. So if u please send a project how it should be done,Or you can send email link. I will be very grateful to u.

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What is microsoft t sql?

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What is dense_rank in sql?

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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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