admin In computer science, logic gates such as NAND gates are very useful. You can use NAND gate as universal gate. They can be helpful in designing any complex logic circuit its implementation using NAND gates only. In this post you learn to use NAND as universal gate to create a logic diagram of a digital … Read more
In this lesson you will learn to convert er model into relational model. First step in designing a database is to create an entity-relationship model. Then the entity-relationship model is converted into a relational model. The relational model is nothing but a group of tables or relations that create for your database. Read: DBMS BasicsRead: … Read more
In this article, we will perform a subtraction using 2’s complement. An unsigned binary number does not have a sign bit in the most significant bit (MSB) position. For example, consider 8-bit representation of 3810 Now, if we take two’s complement of unsigned binary number then we get signed binary representation of a number which … Read more
Data Manipulation Language ( DML ) is the language used to maintain the database in a DMBS. The SQL (Structured Query Language) is the most popular language to manipulate databases. DML Commands The DML commands perform following tasks on a database. INSERT SELECT DELETE UPDATE The SQL being a DML can do above task without … Read more
Algebra I is also called the elementary algebra topics is essential to start your math journey. Often math learner finds it difficult to work on the math for computer science, this is due to conceptual errors or incomplete knowledge of basic math. Introduction to Algebra Course Welcome to Algebra 1 course. Algebra is fundamental topic … Read more
The Data Definition Language( DDL ) commands are used for creating new or modify existing schema of a relation. You can also set constraints such as key constraints, foreign key constraints, etc on a relation. CREATE TABLE Command This command creates a new relation or table. You must specify the fields and data type for … Read more
Stack is a linear data structure that is widely used in operating systems and many applications. The stack implies an office stack of files in which you put new files on the top and the employee always take care of the newly arrived file first. Similarly, when a stack is implemented in whichever method you … Read more
The first of data structures are collections that has index and items in the collection can be accessed through indexes. What do we understand Collections? Groups of data in different forms are one of the fundamental data structures in most programming languages. In many cases, groups of data expressed through different data types are referred … Read more
Designing a database structure without proper planning would cause duplicate data and problem updating the database. This will result in an inconsistent database. The process of normalization is to make an efficient database design that allow faster and efficient access while maintaining the accuracy. What is Normalization? Normalization is a database design technique that cuts … Read more
You have learnt about member functions earlier. We now expand the idea and talk about private member function and nesting of function in C++. A function declared inside the class’s private section is known as the “private member function”. A private member function is accessible through the only public member function. Data Members Data members … Read more
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