"A database is an organized collection of data (also known as a data store) stored and accessed electronically through the use of a database management system."
The study of storing and retrieving data, including data modeling, query languages like SQL, and database design.
Relational Database Management Systems (RDBMS): This topic covers the basic principles and concepts of database management systems, including entity-relationship modeling and data modeling.
Structured Query Language (SQL): SQL is a standard language used for managing data in relational databases. This topic covers the basics of SQL, including the different types of commands and operators.
Database Design: This topic covers the process of designing a database, including the steps involved in analyzing the data and creating a database schema.
Database Administration: Database administration involves managing and maintaining a database system. This topic covers the different aspects of database administration, including performance tuning, backup and recovery, and security.
Data Warehousing: This topic focuses on the concept of data warehousing, which involves collecting and managing large amounts of data from different sources for analysis and decision-making.
NoSQL Databases: NoSQL databases are non-relational databases that are used for storing large volumes of unstructured or semi-structured data. This topic covers the differences between NoSQL databases and RDBMS.
Data Mining: Data mining is the process of analyzing data from different sources to extract useful information. This topic covers the different techniques used for data mining, including association rule mining, clustering, and classification.
Big Data and Analytics: Big data refers to the massive amounts of data that are generated by various sources. This topic covers the different analytics techniques used for handling big data, including Hadoop and Spark.
Cloud Database Services: Cloud database services are third-party services that provide cloud-based database solutions. This topic covers the different types of cloud database services, including Amazon RDS and Azure SQL Database.
Web Development with Databases: This topic covers the integration of databases with web development, including the basics of HTML, CSS, and JavaScript, as well as backend languages like PHP and Python.
Relational Database Management Systems (RDBMS): These database systems store data in tables with rows and columns, and use SQL (Structured Query Language) to manage the stored data. They are the most commonly used database systems in organizations and businesses.
Object-oriented Database Management Systems (OODBMS): These database systems store data as objects and classes, making them highly efficient in handling complex data structures.
Hierarchical Database Management Systems: These are organized in a tree-like structure, with a parent-child relationship between data. These systems were popular in the early days of computing, but they have now fallen out of favor.
Network Database Management Systems: These systems store data in a flexible, complex network structure. They are similar to hierarchical database systems, but they allow for more flexibility and complexity.
Cloud Database Management Systems: These database systems are hosted in the cloud and allow for flexible storage and computing power. They are highly scalable and offer many features for data management and security.
Distributed Database Management Systems (DDBMS): These systems are used to manage distributed databases and data processing across multiple sites. They are highly scalable and allow for efficient management of large-scale data processing.
Time-series Database Management Systems: These database systems focus on managing time-series data, which is data that is collected over time. These systems are highly efficient in managing IoT data and sensor data.
Columnar Database Management Systems: These systems store data in columns rather than rows, making them highly efficient in managing large-scale data operations. They are commonly used for data warehousing and analytics.
Graph Database Management Systems: These systems store data in a graph-like structure, allowing for efficient management of relationships between data. They are highly efficient in managing unstructured data.
Document-oriented Database Management Systems: These database systems store data as documents, making them highly efficient in managing semi-structured and unstructured data. They are commonly used in web applications and content management systems.
"Small databases can be stored on a file system."
"Large databases are hosted on computer clusters or cloud storage."
"The design of databases spans formal techniques and practical considerations, including data modeling, efficient data representation and storage, query languages, security and privacy of sensitive data, and distributed computing issues."
"A database management system (DBMS) is the software that interacts with end users, applications, and the database itself to capture and analyze the data."
"The DBMS software additionally encompasses the core facilities provided to administer the database."
"The sum total of the database, the DBMS, and the associated applications can be referred to as a database system."
"Computer scientists may classify database management systems according to the database models that they support."
"Relational databases became dominant in the 1980s."
"These model data as rows and columns in a series of tables."
"The vast majority use SQL for writing and querying data."
"In the 2000s, non-relational databases became popular, collectively referred to as NoSQL."
"Non-relational databases use different query languages."
"Data is accessed electronically through the use of a database management system."
"Practical considerations in database design include data modeling, efficient data representation and storage, query languages, security and privacy of sensitive data, and distributed computing issues."
"The DBMS software interacts with end users, applications, and the database itself."
"The purpose of a database management system is to capture and analyze the data."
"One advantage of using a computer cluster or cloud storage for large databases is the ability to host them."
"Relational databases store data as rows and columns in a series of tables."
"Non-relational databases became popular due to their use of different query languages."