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!
Use inheritance as an implementation technique
when you are going to use inheritance as an implementation technique, you can achieve same goal in a safer way by making one class an attribute or associate of other class. In this way, one object could selectively invoke desired functions of another class, by using delegation rather which applying inheritance.
A safer implementation of Stack will delegate to List class as shown in Figure. Every instance of Stack includes a private instance of List. Stack: push operation delegates to list by calling its last and add operations to add the element at the end of list, and the pop operation has a same implementation using last and remove operations. The ability to corrupt stack by adding or removing arbitrary elements is hidden from client of the Stack class.
how to data store?
Durability : This property necessitates that once a transaction has committed, the changes made by it be never lost because of subsequent failure. Thus, a transaction is also a bas
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
You group has been hired by TrainingrUs.com to keeps track of training revenues. TrainingrUS.com wants you to keep scheduling. COURSE table contains following information:
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu
The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state’s fire departments. Each fire department has unique department numb
Scenario: You are a freelance database designer who has just been contacted by a small software development company named Altair Software. The president of the company has asked
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd