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SQL stands for Structured Query Language. It is a language used to manage data in relational database management systems (RDBMS).
RDBMSs are database management systems that store data in tables. Each table consists of rows and columns. The rows represent individual data records, and the columns represent the different pieces of data about each record.
SQL is a declarative language, meaning you tell the database what you want to do, not how.
There are two ways to see error logs of scheduled events on MySQL: The SHOW EVENTS statement will return a table of information about each scheduled event. The table will include the following columns: If the ERRORS column for a scheduled event is greater than 0, then the event has […]
We can create scheduled events by SQL on MySQL using the CREATE EVENT statement. The syntax for the CREATE EVENT statement is as follows: The event_name parameter is the name of the event. The schedule parameter specifies when the event will be executed. The event_body parameter is the SQL statement […]
You can retrieve information about the columns in a MySQL view using the INFORMATION_SCHEMA database. To find the data types of the columns in your view, you can execute the following query: Replace your_database_name with the name of your database, and your_view_name with the name of your view. This query […]
In MySQL, VARCHAR and LONGTEXT are two different data types used to store character strings. VARCHAR is a variable-length character string type that can store up to 65,535 characters. When you define a VARCHAR column, you need to specify the maximum number of characters it can hold. For example, if […]
MySQL query optimization is improving the speed and efficiency of database queries by reducing the amount of data that needs to be scanned, increasing the use of indexes, reducing the complexity of the question, and improving the way the data is retrieved and processed. It involves analyzing query execution plans, […]
SRID stands for Spatial Reference Identifier, a unique identifier assigned to a spatial reference system used in Geographic Information Systems (GIS). SRIDs define the coordinate system, projection, and geographic location of the data being used in a GIS system. SRIDs are used in maps like Google Maps and Yandex Maps […]
Amazon Web Services (AWS) is a collection of remote computing services (also called web services) that comprise a cloud computing platform provided by Amazon.com. These services operate from 12 geographical regions across the world. The most central and well-known of these services arguably include Amazon Elastic Compute Cloud and Amazon […]
Dapper is an open-source micro-ORM (Object-Relational Mapper) for dotNET. It is designed to be lightweight and fast and is often used as an alternative to larger ORMs such as Entity Framework. An ORM tool simplifies interacting with a database from within an application. It does this by mapping objects in […]
Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides scalable computing capacity in the cloud. It allows you to launch virtual machines (known as instances), which are pre-configured with a variety of operating systems, and configure the resources of each model, such as CPU, memory, and storage, […]
Debezium is an open-source distributed platform for change data capture (CDC). It provides a scalable and reliable way to capture and stream changes from databases (such as MySQL, PostgreSQL, and MongoDB) to event streams in Apache Kafka. Debezium can track changes to data in real-time, making that data available for […]