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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
WHAT IS MEANT BY E-R MODEL
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Architectural standard: Designation : Architect , Consultant Job Profile : As a part of Oracle Fusion Middleware at Satyam, I am involved with Presales, Delivery, A
Primary index A primary index is a file that has a sorted series of records having two columns: a block address for that key field in the data file; and the ordering key field.
Fifth Normal Form (5NF) These relations still have a difficulty. While defining the 4NF we mentioned that all the attributes depend upon each other. Whereas creating the two ta
Design an EER schema for the following application and translate the EER schema into relational schemas (and constraints). It is possible that some requirements cannot be captured
Objectives differentiate DDBMS and conventional DBMS; Describe Network topology for DDBMS; Describe the concepts of horizontal and vertical fragmentation; Descr
Information about a bank is about customers and their account. Customer has a name, address that consists of house number, area and city, and one or more phone numbers. Account ha
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