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I need to Map an E-R diagram to a relational schema
Performance of Various Concurrency Control Mechanisms
(a) Why did SAP introduce the extended star schema?
WHAT IS DSS? WRITE ITS REQUIREMENTS.
Shared lock or Read Lock It is requested by a transaction that needs to just read the value of data item. A shared lock on a data item does not permit an exclusive lock
Describe the Association: Design Before we describe association design let us define association "Association is set of links between two objects in the object model". It is
Design Of Distributed Databases: The distributed databases are mainly relational at local level. So a local database schema is the similar as that of a centralised database design
What are the uses of functional dependencies? To test relations to see whether they are legal under a given set of functional dependencies. To state constraints on the set
Explain the Deferred Update The deferred update methods do not physically update the database on disk till after a transaction reaches its commit point; after that the updates
Explain how you can define an object model of a system. A list of terms that shall be used by end users to describe state and behaviour of objects in system. Different use
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