Do foreign keys improve performance?

0 Answers  

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a. Can you delete data from a View. b. If Yes, can you delete it if there are multiple tables c. If No, can you delete if there is single source table which is joining.

1 Answers   CGI,

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what are local and global variables and their differences? : Sql dba

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List the different type of joins?

0 Answers  

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how many sql dml commands are supported by 'mysql'? : Sql dba

0 Answers  

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How to count the no of records of a table without using COUNT function?

11 Answers   TCS, Tesco,

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What will you get by the cursor attribute sql%found?

0 Answers  

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There are 5 records in a table and we have implemented two triggers that are :pre_query and post_query how many times these triggers will fire.

2 Answers   Maruti Suzuki,

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Hi Everyone, How to get fist and last record from a table in oracle? Thanks in advance

13 Answers   IBM,

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What is an inconsistent dependency?

0 Answers  

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What is sql integrity?

0 Answers  

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1 SELECT a.field1, b.field2, c.field3, d.field4 2 FROM atable a, atable b, ctable c, dtable d 3 ? 4 ORDER BY 1 What is the minimum number of joins that must be specified on line 3 in the sample code above to properly link the tables? Notice that the table "atable" is aliased twice: once as "a" and once as "b." 1. One join 2. Two joins 3. Three joins 4. Four joins 5. Five joins

6 Answers   Sonata,

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