What are keys in sql?
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what is the difference between varray and table data type..please expalain with some examples... under what situation you will go for varray..instead of index by table...
how to fetch alternate records from a table? : Sql dba
Practice 1: Changes to data will only be allowed on tables during normal office hours of 8.45 in the morning until 5.30 in the afternoon, MONDAY through FRIDAY. A. Create a procedure called SECURE_DML that prevents the DML statement from executing outside of normal office hours, returning the message: “you may only make changes during normal office hours” b. Create a statement trigger on the PRODUCT table which calls the above procedure. c. Test it by inserting a new record in the PRODUCT table.
What is full join in sql?
Dear All, Question for this Week Find out possible error(s) (either at compile time or at runtime) in the following PL/SQL block. State the reason(s) and correct the errors. Declare Cursor C1 is select ename, sal, comm from emp; Begin For i in C1 Loop If i.comm between 299 and 999 then Dbms_output.put_line(i.Ename || ‘ ** Good Commission’); Elsif i.comm > 999 then Dbms_output.put_line(i.Empno || ‘ ** Very Good Commission’); close C1; Else Dbms_output.put_line(i.Ename || ‘ ** ’ ||nvl(i.comm,‘O’)); End if; End Loop; End;
What is rank dense_rank and partition in sql?
how many no of table can be join in a sql query.
What is an inconsistent dependency?
What is the relation b/w view and trigger
Why functions are used in sql?
what is a database lock ? : Sql dba
What are all the different normalization?
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