All posts by DreamMaker

11Dec/16

I/O Constraints

December 11, 2016RDBMSbusiness-constraints, data-integrity-constraints, foreign-key, i/o-constraints, not-null, primary-key, unique-keyDreamMaker

I/O Constraints Constrains that control data insertion and data retrieval speed are known as I/O (Input-Output) constraints. It includes the following constraints. Primary Key Foreign Key Unique Key Not Null Primary KeyRead More…

11Dec/16

Data Integrity Constraints

December 11, 2016RDBMSbusiness-constraints, data-integrity-constraints, i/o-constraintsDreamMaker

Sometimes we need to provide some restriction on the data for security and data integrity reason. We must ensure that only valid and complete data should be stored into the database. OracleRead More…

10Dec/16

String Functions

December 10, 2016Cfunctions, introduction-to-array, string, string-arrays, string-functions-in-c, string-handling-functionsDreamMaker

C programming language provides a rich set of string handling functions to perform different task on string easily. They are available inside string.h header file so we need to include string.h intoRead More…

04Dec/16

Function Overloading

December 4, 2016CPPfunction-overloading, functions-in-cpp, passing-arguments, polymorphismDreamMaker

Overloading refers to the process of using the same thing for different purposes. It is also referred to as function polymorphism. It works on the concept “Same name, multiple tasks”. In programmingRead More…

02Dec/16

Inline Function

December 2, 2016CPPfunctions-in-cpp, inline-function, static-member-functionsDreamMaker

Problem in Using Normal Function The main advantage of function is to save codding efforts, memory space and reusability. But whenever we call a function, it consume  a lot of time sayRead More…

30Nov/16

CPU Scheduling

November 30, 2016OScpu-io-burst-cycle, cpu-scheduler, cpu-schedulingDreamMaker

CPU scheduling is the basis of multi-programming operating system. By switching the CPU among the processes the operating system can make the use of computer effectively. The objective of multi programming isRead More…

29Nov/16

Context Switch

November 29, 2016OScontext-switch, cpu-scheduler, cpu-schedulingDreamMaker

What is Context Switch? When the processor moves from one process to another process, it is called context switch. The CPU will be deallocated from the old process and the new processRead More…

27Nov/16

Arrays of String

November 27, 2016Carray, array-in-c, character-array, introduction-to-array, multi-dimesion-array, two-dimesion-array, types-of-array, what-is-arrayDreamMaker

Arrays of string can be represented using the two dimension character array. An array having two subscripts is known as two-dimension array. Two-dimensional array is a collection of rows and columns soRead More…

27Nov/16

Introduction to String

November 27, 2016Carray, array-in-c, character-array, string, two-dimesion-array, types-of-array, what-is-arrayDreamMaker

A String is an array of character. We can easily represent a string using one dimension array. Similar to an array of integer that allows storing collection of integer values, we canRead More…

26Nov/16

Schedulers

November 26, 2016OScpu-bound, cpu-scheduler, dispatcher, i/o-bound, process-scheduling, schedulerDreamMaker

A process transfers between various scheduling queues throughout its lifetime. The operating system must select a process from these queues in some order for scheduling purposes. The selection process is done byRead More…