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Security: In a centralised system, access to the data can be simply controlled. Though, in a distributed DBMS not only does access to replicated data have to be controlled in many locations, but also the network required to be secured. Networks over a period have become more secure, still there is a long way to go.
File Manager File manager handles the allocation of space on disk storage. It starts and maintains the list of structures and indices described in the internal schema that is
What is inheritance? Inheritance is an object orientation concept that allows reusability of code / design. Basic sense of inheritance is that if one class is predefined than a
what do you mean by consistency in rdbms?
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
Smart Alex Catering Sevice (SACS) is a company offering top class catering staff for prestigious events. The company employs approximately 200 hourly paid contact staff - chefs,
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Which are the two ways in which entities can participate in a relationship? Total and partial are the two ways in which entities can participate in a relationship
A field-groups statement or an insert statement reverses storage space and transfers values. False.
In the first unit of this block, you have been given with the details of the Database Management System, its structure, advantages etc. This unit is an attempt to give you informat
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