What is meant by Materialized view?

2 Answers   iGate, Marlabs, Polaris,

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Can %notfound return null after a fetch?

0 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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Advantages and disadvantages of stored procedure?

0 Answers  

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What is the syntax and use of the coalesce function?

0 Answers  

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How to order siblings in oracle hierarchy queries?

0 Answers  

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What does sql stand for?

0 Answers  

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how would you write a query to select all teams that won either 2, 4, 6 or 8 games? : Sql dba

0 Answers  

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What are the advantages of the packages

6 Answers   Oracle,

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How to copy a table in another table with datas?

9 Answers  

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Question: Below is the table city gender name delhi male a delhi female b mumbai male c mumbai female d delhi male e I want the o/p as follows: male female delhi 2 1 mumbai 1 1 Please help me in writing the query that can yield the o/p mentioned above?

2 Answers  

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What is the difference between union and union all command?

0 Answers  

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