What is Database?

By | September 16, 2020
What is Database

Every organization in the real world is like a system which requires resources to fulfil its objectives. These resources include physical resources (humans and equipment), and logical resources (data). It is complicated to relay on the physical resources because they consume a lot of time and these resources are error-prone, so it’s always a good idea to use logical or data resource when we are dealing with several physical resources.

In the current scenario, data is considered as one of the critical resources and the main assets of an organization. If an organization fail to manage its data, then it will not be able to work efficiently. Realizing this fact, the database system has emerged as one of the important courses in the current IT industry, and therefore most of the companies like to organize data in proper shape in databases.

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Here in this article, we have covered all the information you need to know about the database. It is very important to understand what is database and data before you dive into SQL and NoSQL languages.

What is Data?

Data could be single or multiple entities which provide the fact or valuable information about the record. For instance, your ID card contains some Data or useful information about you which distinct you from others.

Data could be represented by facts, text, graphics, sound, images, and video segments, which provide meaning to the user environment.

What is Database?

A database is a sequential collection of data where data is organized in such a manner that retrieval and updation become easy. It can also be defined as an integrated collection of data that is shared by many legal users or developers.

To deeply understand the database, we need to know these three key points:

  • Integration
  • Sharing
  • Security

Integration

Every system in the real world is found in the integrated form, for instance, a faculty in the university is an integration of many related departments, and each one is easy to administer and manage. The database also works on the same concept, where the database is not just a collection of data in a single reservoir, but rather the integration of many organized units.

Sharing

The data in the database is stored in one place and used by several users. So, the database can be treated as a single entity which resources are shared by many users.

Security

It is a crucial part of any database; any un-authorized user cannot access the data stored in the database.

Types of Databases

Databases are classified into many categories, and they categories based on how they store the data. Some of the popular database types are:

Relational Database

These are the most popular and widely used database since 19080. In relational database, data is organized in a tabular form with the help of rows and columns. By far, the relational database has provided an efficient and flexible way to organize and retrieve data. The most popular Relational Database management system SQL use Relational Database to store data.

Object-Oriented Databases

In Object-Oriented database, objects are used to define the database; here, various attributes and methods describe the operations to be performed on the data. The concept of an object-oriented database is similar to object-oriented programming.

Distributed Database

This type of database is developed by a wide area network, and suitable for those organizations which are operational and spread widely in geographical location. This database can satisfy the need of many users at a given instant of time.

In the distributed database, the database might be stored at different computers which make it very complicated and expensive to implement.

NoSQL database

It is a non-relational database, which can store unstructured and semi-structured data. It is contradictory to Relational database where data stored in a composed manner. Currently, NoSQL is widely used in web applications because it is similar to JSON format.

Graph Database

It stores data in the form of entities and then uses some relationship to join the corresponding objects.

Some other accessible database

  • Cloud Database: A cloud database store the data at the cloud computing platform, where the data may be structured or unstructured.
  • Open source Database: Here, the source code of the database is open source, and it could be a SQL or NoSQL database.
  • JSON/Document Database: This database is used to manage and retrieve document-oriented information from the web page. Many web applications use this database to send and receive data between the server and the client.

Advantages of Database

Let’s discuss the significant advantages we get when we use the database approach to store data.

Data Independence

The database separates the data from the main application, so if any changes made in the main app, then it would not affect the existent data.

Minimal Data Redundancy

Data redundancy means that a data item is stored at multiple locations, and using the database, we can reduce the data redundancy.

Improve data consistency

By reducing the data redundancy, we make the data consistent.

Improve data Sharing

The database is a shared resource; only authorized user can access a set of databases.

Increase the productivity of application

There are many Database management systems present in the markets, which can be used to add and retrieve data from the database quickly and efficiently.

What is Database Management System (DBMS)?

A Database Management System, aka DBMS, is a computer program or software which is used to create and manage different type of databases. Using Database Management System, we can create access and manipulate data between the databases.

The main objective of a DBMS to the server as an interface between the user and the database. It allows the user to perform the CURD operation on the database. Apart from the simple CRUD operation, a DBMS can be used as an administrative tool, which allows the user to monitor, tuning, backup, and recover the data or the complete database.

You must be heard of SQL and MySQL, SQL is a relational Database management system, which is a type of DBMS, and MySQL is an application of SQL.

Conclusion

Here you get to know all about the database and its advantages. Currently, mostly all the organizations use the Relational Database and SQL RDBMS to manage that database. A new database “NoSQL” is also emerging in the web-application market because of its rapid use in server and cloud computing. A Database Management system is a software which is used to create and modify the corresponding database. There are various types of DBMS for multiple databases, for instance, there is a Relational Database Management system (SQL) for Relational Database and Relational Object-Oriented Database Management System (PostgreSQL) for the relational object-oriented database.

We hope you like this article, and you learned something new, if you have any suggestion related to the article, please let us know by commenting down below.

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