Is sql the best database?

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What is the main reason behind using an index?

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I m giving Source, Destination and Age. Write a procedure or function, it will give to u this source to destination tickets are available or not, if available then check this person is senior citizen or not,if this person is senior citizen then give some discount. PLZ give this answer...... Thanks advance.....

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Can we declare a column having number data type and its scale is larger than pricesionex: column_name number(10,100),column_name numbaer(10,-84)

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What are the sql aggregate functions?

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What is program debugging?

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what is a composite primary key ? : Sql dba

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how to create a new table in mysql? : Sql dba

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Create table emp (id number(9), name varchar2(20),salary number(9,2)); The table has 100 records after table created.Now i nee to change id's Datatype is to be Varchar2(15). now Alter table emp modify(id varchar2(15),name varchar2(20), salary number(9,2)); Whether it will work or returns error? post answer with explanation.

13 Answers   Oracle, TCS,

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Does access use sql?

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what is the difference between nested subquery and correlated subquery?

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What is consistency?

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