what is a composite key ? : Sql dba

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i have a table t1 a math 20 b phy 30 cchemisty 10 a math 40 b phy 23 c che 21 a math15 bphy 33 c che 56 write a quire to find out the max markr of each subject

8 Answers  

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Explain locks? : Transact sql

0 Answers  

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

0 Answers  

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what is sql and plsql

6 Answers  

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What does where 1/2 mean in sql?

0 Answers  

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What is a clob in sql?

0 Answers  

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What is the difference between sql/pl-sql/embeded sql?

3 Answers  

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What is trigger point?

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what is 'force view'?

3 Answers   Cap Gemini, SPIC,

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How many database objects (trigger, packages, sequence etc) uses a particular field in a given table. For ex: I want to know how many database object uses the ATTRIBUTE1 in the PO_VENDORS table. What query will give me the result showing the database object name(package, trigger etc), field_name used (in this case ATTRIBUTE1) and table_name (in this case PO_VENDORS).

2 Answers   IBM,

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how can you create an empty table from an existing table? : Sql dba

0 Answers  

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