How to prevent concurrent access to my data?

0 Answers   HCL,

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what is the difference between DBMS and RDBMS??

76 Answers   Aon Hewitt, BlackRock, Infosys, ISB, Jawood, TCS,

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What is the best database for big data?

0 Answers  

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What's the difference between star and snow flake schema?

0 Answers  

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What are the advantages of using Query Strings?

0 Answers   MCN Solutions,

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what do u mean by canvases and alerts?

0 Answers  

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Explain the necessary techniques to control deadlocks?

0 Answers  

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Which database is best for storing images?

0 Answers  

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When does checkpoint occur in dbms?

0 Answers  

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Define cursor and its types.

0 Answers  

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what the REPLACE('JACK AND JUE','J','BL') will return ?

1 Answers   HCL, IBM, Wipro,

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when we login sql editor using username and password then it says this error "could not resolve service name" then what can we do at client side.( here thing is tnsnames.ora file is ok till yesterday and worked well, but now it giving error.)

2 Answers  

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