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What are primary keys and foreign keys?
Primary keys are the unique identifiers for every row. They must have unique values and cannot be null. Due to their significance in relational databases, Primary keys are the most fundamental of all keys and constraints. A table can have only one Primary key. Foreign keys are both a method of ensuring data integrity and a manifestation of the relationship among tables.
Which of following can not be accessed randomly DRAM, SRAM, ROM or Magnetic tape ? Ans. Magnetic tape cannot be accessed randomly; it can only be accessed sequentially.
Time synchronization is necessary in? Time synchronization is essential in TDM.
A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the asci
Q. What do you mean by Drive Cache? Disk cache may be a part of RAM sometimes known as soft disk cache which is used to speed up access time on a disk. In latest technologies s
In multiprocessing several processors require to communicate with one another. So synchronisation is needed between them. The correctness and performance of parallel execution reli
Is it possible to join ASP.NET webforms and ASP.MVC and make a single web application? Ans) Yes, it is possible to join ASP.NET webforms and ASP.MVC and develop a single web a
RISC Approach - computer architecture: The RISC processors only use easy instructions that can be executed within one clock cycle. therefore, the "MULT" command discussed abov
What is difference between hold time and setup? The interviewer was looking for one exact reason, and it’s really a good answer as well..The hint is hold time doesn't depend onto c
Q. Implementation of BUS Construction of a bus system for four registers employing 4×1 multiplexers is displayed below. Every register has four bits which are numbered 0 throug
what are the different techniques of biasing a transistor?
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