Switch Statement
Switch Statement The C switch statement is a control flow statement that allows a program to execute different code blocks based on the value of an expression. The syntax for a switch statement in C is as follows: switch(expression) { case value1: /* code to be executed if expression is equal to value1 */ break; […]
SQL Views
SQL Views In SQL, a view is a virtual table based on the result set of a SELECT statement. Views allow you to store and reuse complex queries and provide an additional layer of security by limiting the data that users can access. Here are some key concepts related to SQL views: Creating a view: […]
PHP MySQL Database
PHP MySQL Database What is MySQL: MySQL is a popular open-source relational database management system (RDBMS) that uses Structured Query Language (SQL) to manage data. It is widely used for web-based applications, including e-commerce sites, content management systems, and other types of web applications. MySQL is known for its speed, reliability, and scalability, and it […]
PHP – What is OOP
PHP – What is OOP In PHP, OOP stands for Object-Oriented Programming. It is a programming paradigm that focuses on the use of objects and classes to represent and manipulate data and behavior. In object-oriented programming, a class is a blueprint for creating objects, which are instances of the class. Each object has its own […]
PHP Exceptions
PHP Exceptions In PHP, exceptions are a way of handling errors or exceptional situations that occur during the execution of a program. Exceptions allow you to separate the error-handling logic from the regular program flow, making your code more maintainable and easier to debug. Here’s an example of how to use exceptions in PHP: function […]
PHP and JSON
PHP and JSON JSON (JavaScript Object Notation) is a lightweight data interchange format that is widely used in web applications for data transmission between the client and server. PHP provides several built-in functions for encoding and decoding JSON data. To encode PHP data into JSON format, you can use the json_encode() function. For example: $data […]
SQL Working With Dates
SQL Working With Dates Working with dates in SQL is a common task in database management. Here are some examples of how to work with dates in SQL: Retrieving records between two dates: To retrieve records between two dates, you can use the BETWEEN operator. For example, to retrieve all records between January 1, 2022, […]
SQL AUTO INCREMENT Field
SQL AUTO INCREMENT Field In SQL, AUTO INCREMENT is a feature that automatically generates a unique numeric value for a column every time a new row is inserted into a table. It is commonly used for primary key columns, which are unique identifiers for each row in a table. The syntax for creating an AUTO […]
SQL CREATE INDEX Statement
SQL CREATE INDEX Statement In SQL, the CREATE INDEX statement is used to create an index on one or more columns of a table. An index is a data structure that allows for faster searching and sorting of data in a table. Here is an example of how to create an index in SQL: CREATE […]
SQL DEFAULT Constraint
SQL DEFAULT Constraint In SQL, the DEFAULT constraint is used to specify a default value for a column in a table. When a new row is inserted into the table, if a value for the column is not specified, the default value will be used instead. Here is an example of how to define a […]