Knowledge Base

What is SQL?

It is known as a programming language. It is not actually a programming language. It is actually a database management system. It is a sub-language that only allows operations on the database. What is SQL? In order to get an answer to the question, it is necessary to know what a database is and to understand what the database does. A database is an area on the computer where information is categorized and stored. The increase in information has made it mandatory to classify and separate data and store it. Although there is a file-processing system for storage, this method has lost its efficiency today and a wider information storage method is needed. Contact directory on mobile phones is the best example for this subject. In addition, member information on the web pages where the membership system is located is a good example of this subject. We use this area to access and edit information. In this area, it is also possible to bring together related information and update it. The data are scattered. In the database, this information is organized and stored.

There are many benefits to using a database. First of all, categorizing and storing information saves information from clutter. You will not have difficulty in finding data while searching, and you will save time in this way. It also saves you from repetition. Since it will convert and categorize the information stored in the memory dispersedly into folders, it also prevents space occupation and no space is wasted. Another benefit is that it helps to ensure integrity. student affairs information system is a suitable example, also in banks, hospitals etc. The files created for the records used are also examples for this storage. Both private and public institutions use this area to file and store their existing information. So, why is it so important to keep information in the database this way? because it creates difficulties when you want to keep the related information in separate files and then gather the information you want to bring together. Here, the database classifies and stores the information that is related to each other according to the relationship, just like in a library. It basically has two types of applications. The first is flat-file databases. The second is relational databases. A flat, file database requires a simpler system than a relational database. Here, information is collected and stored unidirectionally. However, the relational database establishes relationships between different files. It groups, classifies and stores these files according to the relationship it establishes. This is where the relationship between database and SQL passes. A system is also required for querying, calling and finding this classified information. Here, SQL is used whether the information in the database is queried and selected. From here, what is SQL? It is possible to find the exact answer to the question. It is a language programmed to find what we are looking for among existing files in the database.