What is primary key and foreign key with example?

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How to find last day of the month in sql query

4 Answers  

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What are different types of statements supported by sql?

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What is substitution variable in pl sql?

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Which join is like an inner join?

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What are the ways on commenting in a pl/sql code?

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How does a self join work?

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how are mysql timestamps seen to a user? : Sql dba

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1. is it possible to use the cursor atttibutes (%found ,% rowcount , %isopen , %notfound ) to our user defined cursor names ....... cursor cursor_name is select * from scott.emp if you use... cursor_name%found , %rowcount ,%isopen,%notfound...will it work... -------------------------- 2.what is the difference between the varray and index by table .. -------- 3. type type_name is table of number(8,3) index by binary_integer; identifier_name type_name; first , last , prior , next ,trim are the methods we can use it for the above type...simillary is there any way to apply for cursors... with thanks and regards..sarao...

0 Answers   Satyam,

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What normalization means?

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How will you make performance better for application including front end and back

2 Answers   Metric Stream,

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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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