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What are the situations while DBMS should not be used?
DBMS should not be used in situations like:
(i) No need of security. (ii) Not difficulty to access the data (iii) No redundancy and inconsistency etc.
Insertion Anomaly: Inability to show certain information-The primary key of the over relation be (enrolment number, Cno). Any new tuple to be inserted in the relation should have
Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database admi
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
prototype of a distributed information system for a national car part retail outlet chain.
Desirable Properties Of Decomposition Decomposition is a process of dividing a relation into its projections that will not be disjoint. Please remind the Relational projection
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Design a database for an airline.The database must keep track of customers and their reservations,flights and their status, seat assignment on individual flights and, the schedule
Your OS has a set of queues, each of which is protected by a lock. To enqueue or dequeue an item, a thread must hold the lock associated to the queue. You need to implement an a
Improved Reliability: In a centralised DBMS, a server failure stops the operations of the DBMS. Though, a failure at single site of a DDBMS, or a failure of a communication link cr
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