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One-to-many: An entity in A is related with any number of entities in B. An entity in B is related with at the most one entity in A.
Example: Relationship between faculty and department.
One department can take on any number of faculty members but a faculty member is assigned to only one department.
Example: Relationship between course and instructor. An instructor can teach several courses but a course can be taught only by one instructor. Please note this is an assumption
Database Errors: An error is said to have occurred if the implementation of a command to manipulate the database cannot be successfully finished either due to inconsistent data or
What is a hashing function? What are the properties of a good hashing function? Describe the folding technique for hashing functions. Ans: Hashing function is a method
Benefits and Limitations od Data Models?
Database systems have many opposite efforts ?
Although, the essential features of E-R diagrams are enough to design many database situations. Though, with more difficult relations and advanced database applications, it is need
Performance of Various Concurrency Control Mechanisms
Information about a bank is about customers and their account. Customer has a name, address that consists of house number, area and city, and one or more phone numbers. Account ha
What is hashing file organization? In the hashing file organization, a hash function is computed on some attribute of every record. The result of the hash function specify in
State the terms Designing the database and Normalization Designing the database: Out of the ERD we have formed, it is very easy to verify the tables, the attributes which the
What are the advantages and disadvantages of merging an association into a class? Advantages: i) Less number of tables ii) Faster performance due to the fewer tables
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