Neither agrees that data has become an important part of our lives in the twenty-first century and with the exponential growth of data generated (About 2.5 quintiles bytes every day) There must be an effective way to sort and process basic data and extract information from them, hence the importance of databases, which are an important part of software and management solutions, as they help in storage, organizing and managing data in a scientific and systematic way.
What does database mean?
A database is basically a set of information that is organized in a certain structure so that it is easy to read, modify, add or delete, for example a database includes a list of clients a company such as customer name, phone number, and any other information that is considered provided. A well-designed database is essential for any company or organization, because the database stores all the details related to the company such as employee data, transaction data, payroll details, etc.
Using this database system overcomes many disadvantages of storing data in separate files. Databases help:
- Minimize duplicate information and ensure data consistency and integrity.
- Allow data to be retrieved in a number of different ways and by a number of users and applications.
- Increase the ability to exchange information.
Why do we need a database?
In everyday life, you may have used the database management system without realizing it, for example, if you entered an online store looking for a product to buy, your information and the data you entered will be stored within the website database for later use to advertise new products that may interest you, as you need Companies and institutions in databases for several reasons, the most important of which.
Managing large amounts of data
The database stores and manages a large amount of data that is added every day, and this would not be possible with any other tool like Excel spreadsheets because it just would not work.
Ease of updating data
In a database it is easy to update data using many of the available data processing languages, such as SQL.
Databases have various ways of ensuring data protection, where the user must log in with a password before entering the database, allowing only authorized users to access the database.
Data integrity is ensured using various constraints, ensuring that they are accurate and consistent in the database.
Ease of data retrieval
Accessing and searching data through the database is very easy, as this is done using DQL data query languages that allow searching any data in the database and performing calculations in it.
What is database management?
A database management system is a system created to manage databases automatically and in an organized manner. It includes the activities of managing, modifying, deleting, storing and searching an information group. In short, a database management system is an automated system that helps the user control information, create a database and update it. There are two main parts to a database management system, the processor of queries and data manager.
Evolution of database management systems
DBMS was first introduced to the world in 1960, a database management system that allows authorized users to manipulate data by entering, deleting, creating, controlling, identifying and reviewing data, as well as storing and extracting data. data sets.
Over time, data became more complex and specialized, so the need arose for a database management system that could meet the evolving demands, and during the 1970s the world adopted a database management system. of relational data (RDBMS) which can store data in rows and columns and can be accessed using a database query language such as SQL. After the advent of RDBMS, many types of database management systems began to emerge such as document databases, hierarchical databases, NoSQL databases, and object-oriented databases.
You can see all kinds of database management systems and much more information about them through database design book.
The importance of a database management system
As mentioned earlier, DBMS acts as a solution that organizes the flow of data generated on a daily basis, and has many benefits associated with the ability to efficiently process large amounts of data, the most important of which are like below:
Database management systems are essential for businesses because they provide an efficient way to handle large amounts and multiple types of data, enabling efficient access to data for businesses that want to make decisions. faster.
Database management systems are very flexible as you can access them from computers, tablets, and even mobile devices, and they allow multiple authorized users to access the same database from different locations and in different ways to achieve different goals, for example, they can The Human Resources Administrator can estimate the annual salary increase by entering the current salaries of employees, adding the increase set by their manager to determine this amount, and at the same time the development team can access the same database to appoint a temporary employee to replace the employee in case he / she is on leave, and all this is done using any electronic device.
Allow data classification and structure
Databases allow organizations and individuals to categorize and structure available data, for example, a university database can store student admission information (such as name, expected year of graduation, nationality, etc.) and also can save grades and student grades for later use if needed.
Create an organized work environment
DBMS provides the ability to create a smoother, more organized work environment A database query language like SQL provides an easy way to access, update, and manipulate data stored in most databases. DBMSs come pre-equipped with Microsoft SQL Server software and MYSQL queries to enable other external devices to access data.
Newer and better ways to manage data
Not only does a DBMS allow authorized users to add new data to a database, update existing data, and delete old data, there are constant additions of new and better ways to make it all things DBMS-related, for example, allowing machine learning to generate suggestions that can help decision makers, or database administrators, make better decisions.
Author: Firas Ashram
Source: 1, 2, 3