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Insulation between conceptual and physical structures
It can be defined as:
1. The Database Administrator should be capable to vary the storage structures without affecting users' views.
2. The internal structure of the database should be unaffected by the varies to the physical aspects of the storage, like changing to a new storage device.
3. The DBA should be able to vary the conceptual structure of the database without affecting all users.
Why older data models are being replaced by new data modelling 100 words accepted#
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
Explain the Role of a database administrator a. Defining the Schema The DBA describes the schema which consists of the structure of the data in the application. The DBA
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
sir, could anybody help me in getting complete information about the mentioned topic
Inconsistent Analysis : The problem as given with transactions T1 and T2 where two transactions interleave to make incorrect result during an analysis by Audit is the instance of s
1. Define each of the following IN YOUR OWN WORDS: (a) File: (b) Record: (c) Field: (d) Primary Key: (e) Secondary Key: 2. A travel agency wants t
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
Create an index for the table Client, field CLIENT_NO of Q ? Command: CREATE INDEX client_client_no ON client(client_no);
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
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