Definition and Meaning of Databases
We often hear the term databases in institutions, companies, the media, and on Internet sites, and we see that a defect has occurred in the database when we connect to a site, and we hear that such a site has been hacked, and the database of such a ministry has been stolen. If you need mobile data you can use mobile proxies.
So you know what is the database? What is its importance? How did it originate and develop?
Who Works in or on Databases?
When you open the Word program, write a topic, and save it with a specific name, and after a while, you come and search for the file, write its name in the search box from Start and it appears for you, then search for a word in the file and find it, and you know how many times it is mentioned in the topic This is a sample of arranged and classified data In a particular file, what if we have a huge volume of data, and it has numbers and accounts, and it depends on each other? How will it be accessed and controlled?
The phone number system in your mobile device is one of the databases so that you can access the name from his first or last name, his email address, or his home number, or his number, if all this data is registered, database science: it is a science from a field of technology Information, which is studied by programmers and computer engineers, as they create databases, link them together and use them, and create databases for institutions and companies, which are used by ordinary users, which facilitate their administrative work and their businesses in accessing and updating data.
Learn What Are Databases?
It is a set of data arranged, in a clear logical and sequential manner, linked by logical-mathematical relationships, arranged in the form of tables from one table or more, in each table a group of rows and columns that distinguish the data in it.
For example, in the employee data table, you will find the following columns: (employee number – employee name – employee department), example.
- The fields are filled with data; Then you find the employee Ahmed: (1- Ahmed – manager).
- And the employee Mustafa: (2- Mustafa – head of the department).
- And the employee Muhammad: (3- Muhammad – Sales Manager).
Thus, the first column of its contents is: (1-2-3) and the second column its contents are: (Ahmed – Moussaqi – Muhammad) and the third column: (manager – department head – sales manager), and so on for many tables, which are related to computerized systems, they are linked together. Some, by number, are unique to each table.
Programmer: programs the databases, creating all the tables for the system of an institution, a ministry, a company, a school, a clinic, or a mobile application and others, and the user only has to work on it, enter his data and control it as he wants, so it must be The database design is easy to handle, despite its internal complexities.
The types of databases differ according to the mathematical logic on which they are based, and among their types:
Relational database: This rule is one of the most common rules that humans use to coordinate information, as it relies on linking tables and information more easily to quickly access the required information.
Gel-structure database: This rule relies on the principle of hierarchy at work, as it creates a sequence of origin, or root, as this system begins to branch in the form of sections, and the principle of its work is based on accessing data in a sequential and branching manner and is either bottom-up or top-down.
The structural structure of the database: It is in the form of a structure between information and data.
Programs through which many databases are created; But the simplest of them is: Microsoft Access, and the most famous: Oracle, MySQL, or what is called (Visual Studio).
Final Word About Securing Your Database
Do not forget to implement a security policy once your database is up and running. More and more hackers attempt to hi-jack your database, which is already costing corporations millions of dollars worldwide. Typical techniques such as SQL injection will result in the hacker requesting ransom from the victim. It’s always a good idea to cover yourself with cyber insurance.
