Can a foreign key be null?

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How you will create Toad Function?

1 Answers  

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Explain what is a view?

0 Answers  

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what are the different index configurations a table can have? : Sql dba

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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Explain what is dbms?

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What is insert command in sql?

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Can a view be updated/inserted/deleted?If Yes under what conditions?

3 Answers  

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What is the diff between Truncate table / delete <table name> purge

3 Answers   TCS,

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what will be the output: select 1 from emp union all select 2 from emp;

2 Answers   iNautix,

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What are the types of operators available in sql?

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How many functions are there in sql?

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