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What are the properties in a relation ?
In a relation Ordering of rows is immaterial and No two rows are identical.
In this programming assignment, you will develop a simple database of student records. Here are the requirements: 1) A student record contains a name and a number. We assume tha
Give an example of Operations from the functions of a bank. For creation of a saving account, you can write: bank::: create -savings-account (customer)->account. For oper
Describe association design of an object by giving one suitable example of it. The Design of Associations Associations are "glue" of advanced object oriented analysis and
what is 3nf
Which method is used to key transformation ? A hash method is used to key transformation.
Limitations of File Based System The file-based system has some limitations. The limitations are listed as follows: Isolation and separation of data: When the data is
In a relation, tuples are not inserted in any definite order. Ordering of tuples is not defined as a part of a relation definition. Though, records may be structured later accordin
Compare the two log-based recovery schemes in terms of ease of implementation and overhead cost. Ans: There are two types of log based recovery techniques: deferred update
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
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