Using BETWEEN, IN, LIKE, IS NULL In SQL database management systems, BETWEEN, IN, LIKE, and IS NULL are SQL operators that help database users filter and display table data in a more flexible order based on specific user-defined conditions. Database users can use operators like BETWEEN, IN, LIKE, and IS NULL in the WHERE clause…
Logical Operators AND, OR, NOT In SQL database management systems, logical operators are used to add multiple user-defined conditions to the WHERE clause to filter and preview data from a particular table. Logical operators help database users improve and display any table query by creating more complex conditions or criteria. Basic logical operators in SQL…
Comparison Operators (=, >, <, >=, <=, <>) In SQL database management systems, comparison operators are used to compare data values in database table queries. Comparison operators help database users filter table data and extract table data and information based on specific conditions or logic. So, let's learn more about comparison operators in the SQL…
Selecting specific columns In SQL database management systems, instead of using the * asterisk wildcard to select all table columns in an existing table, database users can preview specific column values from an existing table by listing the column names in the SELECT SQL database command or statement that they want to display in the…
Setting up a Database Environment Installing MySQL, PostgreSQL, etc. Manually setting up a SQL database management software environment on your local computer involves installing database management system software (DBMS) such as MySQL, PostgreSQL, or any other RDBMS database software on your local computer, device, or server. Installation steps may vary slightly depending on the database…
SQL Database Architecture (Tables, Records, Fields) Information in SQL-created database tables relies on the RDBMS relational concept, where system- and user-created databases store and retrieve information in a tabular format, which is organized or grouped into tables. User-created database tables are the basic building blocks of a relational database concept. Within these user-created database tables,…
Introduction to SQL (Structured Query Language) SQL (Structured Query Language) is a well-known, very powerful, and standard database operations programming language. SQL is used to manage and control multiple relational database tables or databases through SQL query operations. SQL database commands allow database administrators or users to interact with the database through command statements, which…
Types of Databases Relational vs. Non-Relational Database systems are generally divided into two main categories, known as relational databases and non-relational databases, based on their default storage method, schema structure, and management system processes. So, let's understand relational databases and non-relational databases in SQL better. Relational Databases (RDBMS) in SQL. A relational database stores data…
What is a Database? A database is a collection of user-defined, custom-created data stored in a structured order consisting of rows, columns, fields, and tables. It is stored and managed in a tabular format using online or offline software, allowing easy access and retrieval of database information, manipulation, and storage in a secondary storage location.…
Creating and Managing Database Users Creating new users in SQL database and managing existing database users indicates who is using database features and functions with how much privilege in the existing SQL database. In which database users have appropriate access to your database, in which database user roles, multiple levels of database user privileges exist…
