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Insulation between conceptual and physical structures
It can be defined as:
1. The Database Administrator should be capable to vary the storage structures without affecting users' views.
2. The internal structure of the database should be unaffected by the varies to the physical aspects of the storage, like changing to a new storage device.
3. The DBA should be able to vary the conceptual structure of the database without affecting all users.
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
About Attribute inheritance
PART MARKING: For this section, we will use part marking. This means we will supply model answers to all questions but we will only mark six questions. We will choose these randoml
Illustrate the class diagram for class room scheduling system If in any college, the number of classrooms are limited which have to be allocated to various classes and instruct
Draw an Entity-Relationship model for the relational schema given in the Appendix. Show all the entities, relationships, relationship names, and attributes and also underline the
what is database management system? & why it is required?
recovey techniques based on deferred update and immediate update
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
Which method of access uses key transformation? A Hash method of access uses key transformation.
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
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