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Explain trivial dependency?
Functional dependency of the form α ->β. is trivial if α C β. Trivial functional dependencies are satisfied by all the relations.
Need for Multiple Access Paths In practice, most of the online information systems need the support of multi-key files. For example, consider a banking database application hav
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
While sorting field groups we cannot use more than one key field False.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
examples of fields in a database
Representing complex relationship among data A database may contain varieties of data interrelated to each other in numerous ways. A DBMS must have the capability to represent
give me a diagram about physical or internal level
Problem 1. Create a PL/SQL program to insert data into student table and display the details of the student having Reg.No 1010 Writing a PL/SQL program to Insert data
Explain Record Based Logical Models? Record-Based logical Models: Also define data at the conceptual and view levels. Unlike object-oriented models, are used to state overall
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