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The Update Operations:
Update operations are used for altering database values. The constraint violations faced by this operation are logically the similar as the problem faced by Deletion and Insertion Operations. Thus, we will not talk about this operation in much detail here.
Explain three main attributes of data.
For your chosen project, you need to identify the current problem that you wish your project to solve. Produce a Problem Statement. The Problem Statement should explain the purpo
What is called a query -execution engine? The query implementation engine takes a query evaluation plan, implements that plan, and returns the answers to the query.
Data Redundancy -A lot of information is being repeated in the relation. For instance, the information that MCS-014 is named SSAD is repetitive, address of Rahul is "D- 27, Main ro
Define the Division Operation of Relational Algebra Let R be a relation comprising attributes (A1,...Ap,Ap+1,...An) and S comprising attributes (Ap+1,...An) DEF: Division
Data Independence This brings us to our next topic: data independence. It is the property of the database which tries to make sure that if we make any change in any level of sc
Advantages of Database management system Let us summarize the advantages. Reduction of Redundancy: This is perhaps the most important advantage of using DBMS. Redundancy i
Increased parallelism : Since the replicated date has several copies a query can be distributed or can be answered from the smallest loaded site. Also, with more replicas you have
What are the differences among MySQL_fetch_array(), MySQL_fetch_object(), MySQL_fetch_row()? Mysql_fetch_object returns the result from the database like objects while mysql
i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
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