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Can a filed occur in several field groups.
Yes. But it leads to redundant data redundancy.
What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users
We have a buildup of payments that need to be processed. You will need:- To prepare customer account on our site Process payment (you must have working Paypal account to d
draw ER diagram of student entity and course entity where attribute of student entity are student roll, student name, student phone and student address and attribute of course enti
brief history,definition,current trends and future trends if any of data fragmentation
In a relational model how relations are termed? In a relational model, relations are termed as tables. (The term ‘relation’ is the technical name of the ‘table’ in RDBMS)
What is foreign key? A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Record based Logical Models: Use records as the key data representation components Examples: Relational Model: It shows data as well as relationship between data in the form
as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
Enumerate or state the steps in creating a relevant database of a shop.
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