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Give the Introduction of OBJECT DESIGN
Strategies which are selected during system design are carried out in object-oriented design. In this procedure, objects which are identified in the analysis are implemented in a way that it minimizes memory usage, other associated costs and execution time. All this is done by selection of appropriate algorithms, by enforcing proper controls and optimizations.
In this section, we will cover the ideas of object design for process, proper algorithm selections, control implementation and design optimization, with proper adjustment of the inheritance.
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
What are the advantages of object oriented databases in comparison with others? Why it is still not widely used? Object oriented designs are coherent, efficient and less prone
An employee record has the following structure struct employee { int eno; char name[22]; float salary; char dept[10];}; (i) Calculate the record size R in bytes.
a set of possible data value of an attribute is called??
Rearrange Classes and Operations Sometimes, the similar operation is defined across different classes and can easily be inherited from a familiar ancestor, but more often oper
Consider employee table of (i) and list names of department(s) for which average salary for department is more than 10,000. (SELECT d_name FROM dept WHERE d_code IN (SELECT d_c
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.
Saving Derived Attributes to Avoid Re-computation Data that is derived from other data should be stored in the computed form to avoid re-computation. For this, we could define
Describe Interfaces for the DBA? Interfaces for the DBA - Most database systems holds privileged commands which could be used only through the DBA's staff. These involves com
sir, could anybody help me in getting complete information about the mentioned topic
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