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Which of the following defines heterogeneous distributed database?
The prevention of data from corruption and unauthorized access is a function of data
The records of students in a school are kept in order of their arrival. What files access method would be used to access a student's record if the latest record would first be retrieved?
Computers store data as
Relationship between tables in a relational model are created by
In relational model, a tuple is a?
A program designed to detect and prevent malicious programs from a computer system is
Computer virus cannot be transmitted by
Acomputer pofessional who studies an existing system with a view to evolving a computer based system from it is
Which of the following operations prevent file loss?
A technician can protect itself from electronic discharge by using
The moral principles that regulates the use of computers, its accessories and environment are called
The perfomance of the computer can be enhanced by
Routine checks operations on computers in order to ensure its continuous functioning is known as computer
In graphic packages, the process of removing unwanted part of an image is known as
Which of these packages could be used by a Data processing teacher to design a website for a school
In MS PowerPoint presentation, the special effects that control the order in which objects enter a slide and their manner of appearance is
A data element that uniquely identifies one record from the other in a table is the
In Database Management System (DBMS), linking entities is used to represent?
The MS Excel worksheet below shows the salary distribution for four staff of a company. The net salary is paid after deductions have been made.
| S/N | A | B | C | D | E |
| 1 | IDENTIFICATION NUMBER | BASIC SALARY (N) | TOTAL ALLOWANCE (N) | TOTAL DEDUCTION (N) | NET SALARY (N) |
| 2 | LP/p/1202 | 22000 | 29000 | 7000 | 44000 |
| 3 | L/P/1250 | 26000 | 35000 | 9000 | 52000 |
| 4 | L/P/3205 | 15000 | 21000 | 6000 | 30000 |
| 5 | L/P/3215 | 33000 | 41000 | 8000 | 66000 |
Which of the following for mulas would be used to obtain the value in cell E2?