Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Making Common Behaviour Abstract
Let us define abstraction "Abstraction means to focus on the necessary, inherent aspects of an entity and ignoring its accidental features". Or we can say, if a set of operations and/or attributes seem to be repeated in two classes. There is a chance of applying inheritance. It is possible that two classes are really specialised variations of something when viewed at a higher level of abstraction.
When general behaviour has been recognised, a common super class can be created which implements the shared features, leaving only specialised features in subclasses. This transformation of the object model is known as abstracting out a common super class or common behaviour. Generally, the resulting super class is abstract, meaning that there are no direct instances of it, but behaviour it defines belongs to all instances of its subclasses. Such as, again we take a draw operation of any geometric figure on display screen requires setup and rendering of geometry. The rendering varies between different figures, such as circles, , spines and lines, but the setup, such as setting the colour, line thickness and other parameters, can be inherited directly by all figure classes from abstract class figure.
The creation of abstract super classes also enhances the extensibility of software product, by keeping space for further addition on base of abstract class
Explain Hierarchical Model ? Hierarchical Model - It was established to model several kinds of hierarchical organizations which exist in the real world. It uses tree structur
Boyce-Code Normal Form (BCNF) A relationship is said to be in BCNF if it is already in 3NF and the left hand side of each dependency is a candidate key. A relation who is in 3N
Find out the names and company names of all employees sorted in ascending order of company name and descending order of employee names of by which company. SELECT EMPLOYEE_NAME,
we need example of 2phase locking
Evaluate, compare and contrast the two methods of relational database design namely top down method and Bottom up method. What will be your choice if you are asked to select a meth
Question : (a) Differentiate between database integrity and database security (b) Database security involves measures to avoid loss of privacy and loss of confidentiality. D
Project Description: We have purchased facebook style chat software which we are using with our site. It is prepared in PHP but the rest of the site is developed asp.net. Iss
notes about update opreation
how the string works as keyword?
SET concept is used in which type of modelling? SET concept is used in Network Model.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd