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Our company hires independent contractors to install equipment at precise locations across North America. We want to track the installation data and generate reports. The compan
We will explain here an example database application having COLLEGE database and use it in showing several E-R modelling concepts. College database remains track of faculty, Stu
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the delet
Define Database layer? The database layer defines the data formats used in the database.
Which database level is closest to the users? External database level is closest to the users.
Analyzing Association Traversal Association Traversal shall be understood properly for the association design explanation. Analyzing association traversal means analyzing tra
Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca
explain normalisation
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
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