Kunal I.T. Blogs

 Web Applications and Security Computer Networks  Computer network is a group of two or more computers systems or peripheral devices that are connected together to exchange information and share resources with each other. Types Of Networks Personal Area Network (PAN) Local Area Network (LAN) Metropolitan Area Network (MAN) Wide Area Network (WAN)  Advantages Disadvantages of Computer Networks Network Components Switch Repeater Hub Router Bridge E-Shopping The process of buying an selling things online is called E-Shoping or Online Shopping.  Examples of E-Shopping are-

  Database Management System Database is a collection of a data, which is stored in a systematic  manner, i.e. in the form of tables so that we you can retrieve and manipulate information quickly and effeciently from a large set of data. A database consists of one or more tables. A table contains  information in the form rows and coloumns. Rows are called as Records. Columns are called as Fields.     The Database Management System (DBMS) is a computerised record keeping system that enables us to create, store, modify and extract information from a database. Advantages Of Database Management System  Keys   Primary Key Composite Primary Key Foreign Key Candidate Key Database Objects  Ways to Create Tables In Ms Accesss  Design  View  Datasheet View Forms A form is a printable or typed document with blank spaces for insertion of the requires or requested information. Example of a form-