Today, information technology is considered as the first field to show the level of development of a country. Currently, related applications in the category of IT technology are very interested. Database is also one of the popular phrases. So what is Database ? What are the common Database models and specific applications of this model? Let's explore the above questions right below.
What are databases?
Database is a word commonly used in the fields of information technology, data, programming and software… .Database is a database, is a collection of data that is organized and displayed and is often stored. accessed from the computer system or exists as a file in the database management system. It can also be stored on memory devices such as memory cards, hard disks, CDs, etc.
Database plays a key role in technology applications
Role of Database
Database plays an extremely important role when working with data systems. They help the user to successfully connect the data. Users can access the database system faster and easier. Database is the source base for users to access the necessary information.
The main feature of the Database is to retrieve information and data by many different methods. The retrieved contents are guaranteed to have a high degree of data integrity. At the same time, the output information source is not duplicated at all, if there is, the probability is also very low. A database database allows multiple users to access concurrently at the same time.
The most popular database models today
Database: File database is the most common type and is also the most popular model today. Can easily see the files, the information stored, shared and accessed as File. The most common file type database is *.mdb Foxpro. Besides, this database also includes other formats such as text, ascii file format, *.dbf file format, etc.
Database Relational Database:
This is also one of the most widely used data models today. In this model, different entities, i.e. different data sources, will be aggregated, storing the same data table, and these data must be related to each other. Some famous databases that support relational databases include: Oracle, MS SQL Server, MySQL…
This database system is also a pure table of data. However, Database adds other object-oriented cases such as: object behavior to represent the behavior of an object. These objects are also very clearly hierarchical, each level is called a data layer. In simpler terms, they are a collection of groups of objects in the same table and are represented by data lines. The database management systems that support this Database include: MS SQL Server, Postgres, Oracle
Semi-structured databases can store many different types of data. And this information and data is usually stored in XML format. In this model, information describing data and objects are presented in tags. Thanks to this outstanding advantage, the database system is both expanded and convenient to help users easily access the necessary information. According to research experts, Semi-structured Database can be a potential new direction in the fields of data technology application.
Applications of Database
Database systems play an extremely important role in today's information and technology era. The main function of the Database can be mentioned as: storing, retrieving and updating data and many other applications.
Database helps to manage the security and recovery services of the data management system, helping to enforce constraints within this base system. At the same time, manage and control all clients connecting and accessing the data system at the source system. Supports handling of all data access and other control functions.
In addition, Database also provides concurrency control, for tighter security. Create a multi-user environment with secure connection conditions. Many people can simultaneously access and retrieve the necessary data
Above are additional knowledge about Database as well as database system models. This promises to be extremely necessary information for those who study and apply information technology. In the future, this field promises to create an explosive development trend.