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Define single valued and multivalued attributes.
Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes.
Multivalued attributes: Attributes with a set of value for a particular entity are known as multivalued attributes.
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
What is object containment? References among objects can be used to model dissimilar real-world concepts.
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
How does the system cope up with a record crash when recovery is going on after the first crash? Ans: In a system the undo and redo operations are needed to be idempotent to c
Explain Object oriented Model ? Object Oriented Model - This model is based on the object-oriented programming language paradigm. It involves the features of OOP such as inhe
sql is relationally complete-justify
Client Server Databases- The concept behind the Client/Server systems is simultaneous, cooperative processing. It is an approach that presents a one systems view from a user's vie
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
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