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Drawbacks of Data Distribution: The primary drawbacks of distributed database systems are the added complexity needed to ensure proper coordination between the sites. This increas
#what is cursor its uses ? Explain it
Explain the concepts of relational data model? Relational Data Model - The relational model was first introduced through Prof. E.F. Codd of the IBM Research in the year 1970
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Most computer systems authenticate users by asking them for the user name and password. However, the user names and passwords often can be guessed by hackers. Suggest an automated,
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
Distributed query and transaction processing a. Construct a query around any one of the functional divisions you made in 4a such that if executed in the distributed design of 4
Create centralized relational database using Top down method- Construction of Logical Model: Translation EERD into Relational Schema: Use the 8 steps algorithm of converting EERD
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
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