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What are the advantages of object oriented databases in comparison with others? Why it is still not widely used?
Object oriented designs are coherent, efficient and less prone to update problems which are not present in many other database design techniques currently. It is not used widely since only few the database vendors have supported it. It is still not in commercial stream. It is in development stage.
Describe log based recovery The most usably structure for recording data base modification is the LOG the log is a sequence of log records recording all the update activities i
Describe file organisation? A file is organized logically as a sequence of records. These records are mapped onto disk blocks. A) Fixed-Length Records Type deposit=record
Add generation capabilities and/or tailor the built-in functionality of generator. This enables you to produce "all" the test data for the MySQL tables you produced in the previous
Why is need for the multiple access paths?
The objectives of this assignment are: - to develop skills in the design of database driven applications - to develop skills in applying SQL to implement the relational and
what does glory be mean
E-R Model This data model is based on real world that consists of basic objects named entities and of relationship among these objects. Entities are illustrated in a database
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
What is Secondary Index While making the index, generally the index table is kept in the primary memory (RAM) and the main table, because of its size is keeps in the secondary
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