THE DATABASE APPROACH
THE DATABASE APPROACH A database is a collection of logically related data. It provides a centralized collection of data. A database has a self-describing in nature. It contains not only the data but also the complete definition of the database structure and constraints, which are stored in a system catalog. A DBMS manages this data. It allows data sharing …
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TRADITIONAL FILE ORIENTED APPROACH
TRADITIONAL FILE-ORIENTED APPROACH File A file is a collection of records, which are related to each other. The file size is limited by the size of memory and storage medium. There are two important features of file: 1. File Activity 2. File Volatility File activity defines the percent of actual records which proceed in a single run. File volatility de…
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Data Processing in DBMS
DATA PROCESSING Converting raw data into meaningful information in a database system. Stages of data processing in DBMS: 1. Data Collection / Input From various sources like user input, sensors, online forms, scripts, or APIs etc. Input data à raw and unorganized. 2. Data Storage · Stored:- structured format, ex. tables (in relational DBMS) or other …
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Introduction of DBMS
Introduction of DBMS Databases and database systems are an essential part of our everyday life. For example, they facilitate depositing and withdrawing money from a bank, making hotel, airline, or railway reservations, accessing computerized libraries, and purchasing items from supermarkets, among others. We can store and access information in textual, nu…
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PHP Functions
PHP Functions A function is a code or statement block in a program. Perform some specific tasks. Used repeatedly in a program. Not execute automatically when a page loads. Executed by a call to the function. The name must start with a letter or an underscore, and NOT case-sensitive. Take information’s as a parameter, executes a block of statements, or perf…
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