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The Transactions-A transaction is definite as the unit of work in a database system. Database systems that deal with a huge number of transactions are also termed as transaction processing systems.
What are the three data anomalies that are similarly to take place as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why n
Fifth Normal Form (5NF) These relations still have a difficulty. While defining the 4NF we mentioned that all the attributes depend upon each other. Whereas creating the two ta
Benefits: It limits data access. It makes difficult queries look easy. It permits data independence. It presents dissimilar views of the similar data.
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
Every School has many teachers and many students. Each student is assigned to one school and each teacher works for one school only. Each teacher teaches more than one subject but
What is known as sequential file organization? In the sequential file organization, the records are kept in sequential order, according to the value of a "search key" of every
why are older data models are being replaced by new data models
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