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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
Concurrency Identification While designing analysis, model we map real world model into our analytical model. Real life objects are simultaneous in nature, but all the design
Describe the primary key functions? Primary Key : The primary key is an attribute or a set of attributes in which uniquely identify a specific example of an entity. Every entit
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Atomicity: It describes a transaction to be a one unit of processing. We can also say either a transaction will be finished completely or not at all. In the transaction example 1
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
Safe Banking is a Canberra based credit union, which has several branches around Canberra and Queanbeyan. YOU have taken over Safe Banking. YOU need to create a database that organ
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
File Organisation And Its Types Just as arrays, trees, lists and other data structures are used to execute data Organisation in main memory, a number of planning's are used to
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