Glossary index

Technology, science and the universe

+57,000terms
19galaxies
2languages
Dailynew terms from the radar
Data and analytics

Multicolumn Index

A multicolumn index is a data structure created on multiple columns of a table in a relational database with the aim of improving the performance of SQL queries. This type of index allows the…

Data and analytics

Multidimensional

The term 'multidimensional' refers to the ability to represent and analyze data across multiple dimensions, allowing for a richer and more complex understanding of data sets. In the context of data…

Data and analytics

Multidimensional Analysis

Multidimensional analysis is a data analysis technique that involves examining data across multiple dimensions to gain insights. This methodology allows analysts to explore and visualize data more…

Data and analytics

Multidimensional Database

A multidimensional database is a data storage system that allows information to be modeled and visualized in multiple dimensions, facilitating the analysis and querying of large volumes of data…

Cybersecurity

Multimap

A multimap is a type of associative container in C++ that allows multiple values to be associated with a single key. Unlike a standard map, where each key is unique and associated with a single…

Data and analytics

MultiMeasure

MultiMeasure refers to a calculation that involves multiple measures within the context of DAX (Data Analysis Expressions), a formula language used in data analysis tools. This concept is fundamental…

Data and analytics

Multimodal Visualization Models

Multimodal Visualization Models are advanced tools that integrate and represent data from various modalities, such as text, images, audio, and video, to facilitate a deeper and more holistic…

Data and analytics

Multiple Axes

The ability to create multi-axis plots in data visualization libraries allows users to effectively and visually compare different datasets. This functionality is particularly useful when representing…

Data and analytics

Multiple Plots

The ability to display multiple plots in a single figure is a fundamental feature of Matplotlib, one of the most popular libraries for data visualization in Python. This functionality allows users to…

Data and analytics

Multiple Query

The 'Multiple Query' in database systems is a function that allows executing multiple queries in a single request, thus optimizing performance and efficiency in handling large volumes of data. This…

Data and analytics

Multiple Tables

The concept of 'Multiple Tables' refers to the use of more than one table in a database to store related data. This approach is fundamental in the design of relational databases, where data…

Data and analytics

MultiSelect

The Multiple Selection in DAX (Data Analysis Expressions) is a feature that allows users to select multiple items within a filter, facilitating a more detailed and specific analysis of data. This…

Data and analytics

Multivalue databases

Multivalue databases allow multiple values to be stored in a single field, distinguishing them from traditional relational databases where each field is designed to contain a single value. This type…

Data and analytics

MultiValueField

The MultiValueField is a type of field in databases and applications that allows multiple values to be stored in a single entry. This field is particularly useful in situations where a single piece…

Data and analytics

Multivariate Time Series

Multivariate Time Series are a statistical approach that allows for the analysis and modeling of multiple variables that change over time. Unlike univariate time series, which focus on a single…

Data and analytics

MUMPS

MUMPS, which stands for 'Massachusetts General Hospital Utility Multi-Programming System', is a programming language initially designed for database management in the healthcare sector. This language…

Data and analytics

Mutation

Mutation in NoSQL databases refers to an operation that modifies data, such as an insertion or update. In the context of NoSQL databases, mutations are fundamental for data management, allowing users…

Data and analytics

MVCC

Multiversion Concurrency Control (MVCC) is a concurrency control method used in database systems to manage simultaneous access to data. Unlike traditional locking systems, which can cause waits and…

Data and analytics

MyISAM

MyISAM is a storage engine for MySQL and MariaDB that provides fast access to data. It is characterized by its simplicity and efficiency in managing read-only tables and in applications where access…

Data and analytics

MySQL

MySQL is an open-source relational database management system based on SQL (Structured Query Language). This software allows users to create, manage, and manipulate databases efficiently and…

Data and analytics

Mysqld

Mysqld is the MySQL server daemon process, an open-source relational database management system. This process is essential for the operation of MySQL, as it handles client requests, manages…

Data and analytics

Mysqldump

Mysqldump is a utility for creating backups of MySQL and MariaDB databases. This tool allows exporting entire databases or specific tables into a text format that can be easily stored and restored…

Data and analytics

MySQLi

MySQLi, which stands for 'MySQL Improved', is a PHP extension that provides an object-oriented interface for interacting with MySQL databases. This extension was designed to overcome the limitations…

Data and analytics

Mysqli_stmt

The 'Mysqli_stmt' class in PHP represents a prepared statement for MySQLi, which is a PHP extension designed to interact with MySQL databases. This class allows developers to execute SQL queries more…