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Explain I command in QBE ?
I : It is the command in QBE that is used to insert tuple (s) into the database
Data Manipulation Language Data manipulation language (DML) describes a set of commands that are used to query and change data within existing schema objects. In this case comm
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
how many hourse have been spent on a certain project
employee(empid,empname,dept,telno,mobno, add,sssno,tinno,WEdates,WEcomp,WEadd,WEpos,WEres) this is a employee record which is need to be normalize.the WE means work experience
How external/conceptual mapping and conceptual /internal mapping is performed
The entity type STUDENT has the following attributes: Student Name, Address, Phone, Age, Activity, and No of Years. Activity represents some campus-based student activity, and No o
HOW MANY TYPES OF VIEWS
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
Define Thomas write rule Thomas' write rule: The Thomas' write rule is a modification of timestamp-ordering protocol for concurrency control. Assume that transaction T i issue
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