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List the table modification commands in SQL?
A) Deletion
B) Updates
C) Insertion
D) Update of a view
List out various user authorization to modify the database schema. a) Index authorization b) Resource authorization c) Alteration authorization d) Drop authorizat
WHAT IS MEANT BY E-R MODEL
using the invoice table shown below,write the relational schema,draw a dependencies,inclunding all partial and transitive dependencies.assume that the table does not contain repeat
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
Higher Normal Forms Is there more normal forms beyond BCNF? Yes, though, these normal forms are not based on the concept of functional dependence. More normalisation is needed if
Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
What is persistency? Persistency ensures which data is stored and that after the object is no longer available (program stops running) the data will be available to other users
While sorting field groups we cannot use more than one key field False.
Explain algorithm of ER To Relational Mapping ? ER-to-Relational Mapping Algorithm: 1) Step 1: Mapping of regular entity types: For each strong entity type E, form a relatio
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