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What is banker's algorithm?
Banker's algorithm is a deadlock avoidance algorithm that is applicable to a resource-allocation system with multiple instances of each resource type. The two algorithms used for its execution are:
a. Safety algorithm: The algorithm for finding out whether or not a system is in a safe state.
b. Resource-request algorithm: If the resulting resource allocation is safe, the transaction is completed and process Pi is allocated its resources. If the new state is unsafe Pi must wait and the old resource-allocation state is restored.
Define the notation for classes and atrributes The notation for class, attribute, and operations are shown below: Figure: Class with attributes and operations A
what are the limitations of dbms?
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
What is OOM? Object oriented modeling is an approach by which modeling of systems is done by visualizing the system based on real world concepts. Object oriented modeling does
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
Explain Record Based Logical Models? Record-Based logical Models: Also define data at the conceptual and view levels. Unlike object-oriented models, are used to state overall
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