All posts by DreamMaker

12Nov/16

Introduction to Array

November 12, 2016Carray, array-declaration, array-in-c, multi-dimesion-array, two-dimesion-array, types-of-array, what-is-arrayDreamMaker

What is Array? A normal variable can hold a single value at a time. Say for example if we declare a variable of integer type, it can store any single integer valueRead More…

10Nov/16

Process State Diagram

November 10, 2016OSPCB, process, process-control-block, process-state, process-state-diagramDreamMaker

Process and Process State: In this article, we are going to discuss about process, process state diagram and process control block (PCB). A process is a program which is currently in execution.Read More…

10Nov/16

Static Data Member and Member Function

November 10, 2016CPPfunctions-in-cpp, static-data-members, static-member-functions, static-variableDreamMaker

Static Data Member (Class variable): Static Data member has the following properties: It is initialized by zero when first object of class is created. Only one copy of static data member isRead More…

09Nov/16

Object As Function Argument

November 9, 2016CPPfunction-arguments, functions, functions-in-cpp, passing-object, return_type, returning-objectDreamMaker

Similar to passing primary data-type variables, we can also pass object as argument to the function. Objects can be passed by two methods: Call by value: In this method a copy ofRead More…

07Nov/16

Default Argument

November 7, 2016CPPconstant, constant-arguments, default-argument, function-arguments, functions-in-cppDreamMaker

As we know that in C programming language it is compulsory to pass all arguments during function call, which are used in function definition, but C++ allows us to call a functionRead More…

06Nov/16

Functions in C++

November 6, 2016CPPfunctions, functions-in-cppDreamMaker

Function in C++ program is similar to function in C program. Function provides the top-down structured programming approach. It also provides re-usability that means we can use the same function multiple times.Read More…

05Nov/16

Monolithic System Structure

November 5, 2016OSlayered-system-structure, monolithic-system-structure, operating-system-structureDreamMaker

Monolithic system Structure is written as a collection of procedures, each of which can call any other procedure whenever it needs. When this technique is used each procedure in the system hasRead More…

05Nov/16

ALTER TABLE

November 5, 2016RDBMSalter-table, create-table, updateDreamMaker

ALTER TABLE command is used to modify table structure. We can add new column, remove existing column or change data type and size by using alter table command. If records are availableRead More…

04Nov/16

Oracle Functions

November 4, 2016RDBMSoracle-functions, sql-functionsDreamMaker

Oracle provides number of in-built functions. Oracle functions can be divided into two broad categories: Scalar functions Scalar functions are those functions that operates on individual row. It can be categories asRead More…

04Nov/16

Aggregate Function

November 4, 2016RDBMSaggregate-functions, oracle-functions, sql-functionsDreamMaker

Aggregate functions are those functions that can be apply on multiple rows and returns signal result for all rows. They are also known as grouping functions. Oracle provides the following aggregate function.Read More…