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 224821) Difference between "Delete" and "Concatenate" with reference to databases? 2) Difference between SDLC and STLC. 3) Latest versions of the browsers used. 4) What is URL Tampering? 5) Full form of URL. I don't need the answers. These are just for reference.
2445can u tell me how many types of oracle and which type all detail in oracle (suppose all history of oracle )
1 4597I attended AEE's interview in the month of June-2008 Still im waiting for result when should i except. Notification Dated:22/2007
1 4286Post New Oracle Interview Questions
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