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What does the cardinality ratio specify?
Mapping cardinalities or cardinality ratios state the number of entities to which another entity can be associated. Mapping cardinalities must be one of the following:
One to one
One to many
Many to one
Many to many
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
What is storage manager? A storage manager is a program module that gives the interface among the low level data keeps in a database and the application programs and queries su
Determine the Objectives of object oriented design provide an overview of object oriented design; partitioning system to subsystems; describe how a software desig
Differentiate between static hashing and dynamic hashing. Ans: Static Hashing comprises the number of primary pages in the directory fixed. So, while a bucket is full, we requ
What is schema
Multiple-mode locks : It offers two locks: exclusive locks and shared locks. But why do we require these two locks? There are a lot of transactions in the database system that neve
The File Based System File based systems are an early attempt to computerise the manual filing system. For example, a manual file can be set up to hold all the correspondence r
Differentiate between a unique key and a primary key. - By default, clustered index on column are created by primary key while nonclustered index are created by unique key.
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
What are the function of DBA?
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