RGB color code values are based on decimal number system and are defined by integer values from 0 to 255. For example, rgb(255,0,0) represents red color. Hex color code values...

XLSX is a file format for Microsoft Excel spreadsheets that often used to store financial data. XLSX was introduced by Microsoft with the release of Microsoft Office 2007. XLSX is...

Hex encoding is used to convert binary data into hexadecimal representation. It allows to get human-readable format of binary data. Hex decoding is opposite process. It is used to convert...

There are some special characters that are reserved for use in HTML document. It means that browser will parse these characters as HTML code instead of displaying them as text...

ROT13 is a substitution cipher that replaces every letter in the string with the 13th alphabet letter after it. ROT13 is its own inverse, so the same algorithm is used...

UUID (Universally Unique Identifier) is a 128-bit number, commonly represented as a hexadecimal string. UUID can be used to uniquely identify objects across a network. There are various versions of...

POST is one of the HTTP methods which is used to send data to a server to create a resource. Programming languages provides various methods to send POST requests. A...

MySQL allows encrypting and decrypt data using the official AES (Advanced Encryption Standard) algorithm. The AES_ENCRYPT() function encrypts the string with the specified key and returns the encrypted data in...

The CREATE USER statement allows creating a new user in the MySQL server. Users are stored in the mysql.user system table. A newly created user has no privileges. The password...

When managing a database, it is often needed to get a list of users which are used to connect to the MySQL server. MySQL provides statements which allows showing databases...