Relational model Relational Model represents how data is stored in Relational Databases. A relational database stores data in the form of relations (tables). Consider a relation STUDENT with attributes ROLL_NO, NAME, ADDRESS, PHONE and AGE shown in Table. STUDENT ROLL_NO NAME ADDRESS PHONE AGE 1 Ram Dharan 9455123451 18 2 Ramesh Gorkha 9652431543 18 3 […]
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Continue ReadingData Types Data Types defines the type of data a variable can store. PHP allows eight different types of data types. String :- A string is a sequence of characters, like “Hello world!”. Integer :- An integer data type is a non-decimal number between -2,147,483,648 and 2,147,483,647. Float (floating point numbers – also called […]
Continue ReadingDefinition :- PHP stands for PHP: Hypertext Preprocessor . PHP is a server-side scripting language, like ASP . PHP scripts are executed on the server . PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.) PHP is an open source software . PHP is free to download and use. 1.1 PHP’s […]
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