In this tutorial, we will see how we can view the index of a table or a database using the SHOW INDEX command and we’ll also learn how to see all the indexes present in a particular database. MySQL Indexes are the data structure used for improving the performance of search results. Indexes speed up …
In this tutorial, we will learn how to drop an index from a table in MySQL and we’ll see a few examples related to it as well. But before that, let’s have a quick look at what Indexes are and how to create one. Indexes are data structures in SQL to store fields or columns …
In SQL, transactions are the collection of database queries clubbed together as one single unit. This means that all the queries in a transaction will either all process or none will. There are four standard properties of a transaction, they are popularly known as ACID properties: Atomicity: Atomicity ensures that all the queries within the …
The building block of any database management system (DBMS) is managing the data, in Relational-DBMS it is managing records within tables and tables within a database. MySQL is also one of the many RDBMS currently used by a huge number of users and organizations. MySQL provides many features and functionality to manage, control, and maintain …
We have heard a lot about Student Management Systems, Hospital Management Systems, Hotel Management Systems, and so many other management systems, the term is used for managing the data related to each and every organization. In the past, ledgers and paper works were used to manage the data of these organizations, now it has been …
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MySQL uses a lot of techniques to optimize its performance, one such optimization is attained with the help of indexes. Indexes are used for quick retrieval of rows using one or more columns. If an index is not used, MySQL will start the iteration from the first row until it finds the required row. It …
In this tutorial, we will learn about MySQL User privileges, how we can create users in MySQL, the types of privileges assigned to a user, and how to grant user privileges. GRANT is a keyword used for assigning privileges to users. Privileges are the rights that are entitled to a database user. There are different …
In this tutorial, we’ll learn how to Update, Delete, or Insert records into MySQL table using Perl programming language. We’ll see the system dependencies as well and also set up the work environment. Also read: Perl Tutorial: How to connect to MySQL with Perl Pre-requisites There are two system dependencies for this tutorial, if you …
Web applications or system software is written using a programming language that often incorporates a Database Management System(DBMS), for a DBMS to be able to communicate to the programming language needs a Database Driver. In this tutorial, we’ll set up a development environment for MySQL JDBC. MySQL is a widely used open-source Database Management System(DBMS) …
In SQL, there are mainly four categories of commands, DDL (Data Definition Language), DML (Data Manipulation Language), DCL (Data Control Language), and DQL (Data Query Language). MySQL INSERT command comes under DML commands. DML also includes commands like UPDATE and DELETE. INSERT command is used for inserting new records into a table. There are two …