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Define Forms Based Interfaces?
Forms-Based Interfaces - A forms-based interface display a form to each user. Forms are commonly designed and programmed for naive users and interfaces to canned transactions. Several DBMSs have forms specification languages.
Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati
Problem: (a) Given the following relation: Stats(Name,Sex,Children, Occupation, Salary, Tax, Audits) Write SQL code to define the following security constraints: (i) User
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
What are the DBMS languages? Explain. Ans: a) Data Definition Languages (DDL): It is employed to specify database schema for example CREATE DROP statements etc. b) Dat
Databases and data warehouses both are databases and both contains number of rows and columns of tables containing data. Data warehouse is really different from databases because d
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
Determine the benefits of Object oriented design OOD also gives reusability, which saves time, costs and productivity gains through direct mapping to properties of Object-Orie
Determine the advantage of object-orientation Finally, object-orientation has advantage of continuity throughout analysis, persistent representation and design implementation.
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
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