Spark contains three major data structures and APIs for working with big data: RDDs, DataFrames and Datasets. Learn about the difference between them as well as when it's best to apply each.
Spark contains three major data structures and APIs for working with big data: RDDs, DataFrames and Datasets. Learn about the difference between them as well as when it's best to apply each.
MySQL tables fragment over time as delete and update queries are performed. With a large database, the fragmentation slows down queries significantly. Learn about when to use optimization and follow our tips on how to perform table defragmentation.
Learn how to install the MySQL server on Ubuntu 20.04 in this simple tutorial. See also how to secure your server after installation and log in to start working.
You've normalized a database, but now it's too complicated to analyze data. Database denormalization is a commonly used process in data analytics to simplify reports. Learn about the various methods to denormalize a database and when to apply it.
Database normalization is a key concept in database design. Learn how to organize the data and divide it into optimal tables for maximized efficiency.
MySQL events run on a schedule defined by the user. They automate database maintenance and execute tasks periodically. Learn how to use them in this simple tutorial.
Introduction JOINS in MySQL are used to combine information located in multiple tables and retrieve that information in a single result. Relational databases contain several logically related tables linked together, and each table contains unique data or common data. JOINS help retrieve data from tables based on a common field between them. In this tutorial, you will […]
MySQL triggers provide control over data validation when inserting, updating or deleting data from a database. Learn how to use triggers through an example database and when to use each type of trigger.
Data types are important to understand as a name and a data type define each column in a database table. Learn all about MySQL data types and when to use them in this comprehensive guide.
Find a list of all MySQL date functions in this helpful article. Learn what each function does and how to use it through the practical examples.