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What is Object Oriented model?
This model is based on collection of objects. An object has values stored in instance variables with in the object. An object also having bodies of code that operates on the object. These bodies of code are known methods. Objects that contain same types of values and the similar methods are grouped together into classes.
Relational Model: The relational model uses a collection of tables to represent both data and the relationships among those data. Each table has multiple columns and each column h
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
explain thee diffrent types of data models
Object Oriented model :An object has values stored in instance variables within the object. An object also has bodies of code that execute on the object. These bodies of code are
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation
Draw the database using the ER approach and then make the tables accordingly. Populate the tables so that every table have at least 10 tuples. Then using Java and SQL, execute the
Mention the type of constraints we can specify in the CREATE command of DDL. The type of constraints that can be specified are as follows:- PRIMARY KEY, NOT NULL, UNIQUE, FOR
what is the need of a log in dbms
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