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Define deadlock avoidance.
An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the system consider the resources currently available, the resources currently allocated to every process, and the future requests and releases of each process, to decide whether they could be satisfied or must wait to avoid a possible future deadlock.
A database administrator''s responsibilities and data contents
Define the terms i) DDL ii) DML DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data def
Describe domain constraints. Domain constraints contain entity integrity and referential integrity. The domain is a set of values that might be assigned to an attribute. The en
Draw an ER diagram that shows the organization of a simple student database. The database captures the information about letter grades obtained by university students who enrolled
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
What is disadvantage of multiple inheritances? There is potential ambiguity if the similar variable or method can be inherited from more than one superclass.eg: student class m
DISADVANTAGES OF RDBMS
Record based Logical Models: Use records as the key data representation components Examples: Relational Model: It shows data as well as relationship between data in the form
random file orgnization
Describe the static hash file with buckets and chaining and show how insertion, deletion and modification of a record can be performed. In static hash file organization, the wo
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