Oracle

 Oracle Database is a database management system from Oracle. This DBMS is also actively used by large companies and costs a lot of money, but in return it provides great functionality and reliability. Therefore, Oracle Database and Microsoft SQL Server are serious competitors to each other. The results of Oracle in the rankings are not so clear, for example, according to PYPL and DB-Engines, Oracle Database ranks first, according to Stack Overflow Oracle is in eighth position, according to surveys of Oracle software companies in fourth place in popularity. If we take into account only a couple of ratings, Oracle can even be put in first place, but if we take into account all the results, then Oracle cannot be put in first place, therefore, in our rating, this DBMS occupies the third line.

Sale of information products and earnings on affiliate programs

 Sale of information products and earnings on affiliate programs

This way of earning complements almost all of the above, it involves the creation of various information products and their implementation, both through your website and through social networks, YouTube and other sales methods. In the case of affiliate programs, you sell not your own product, but someone else's, but you receive a certain percentage of sales.

Information products include various methods of losing weight, gaining muscle mass, training video courses on earning money, working at a computer, creating websites, playing the guitar, books, manuals and other types of information material, in other words, it is the sale of one's knowledge.

Pros - you create an information product once, and receive money from each sale - this is a full-fledged information business that can bring a lot of money.

Cons - You must have unique and useful knowledge, as well as be able to distribute goods on the Internet.

In all cases, success can only be achieved if you have a good distribution channel, i.e. visited site, promoted group in a social network, or connections with such groups, and so on.

Ways to make money on the Internet as an additional source of income
Here I will list the ways using which you will not earn a lot of money, but you will earn at least something. It is not worth considering all of the following as the main income, only as an additional source of income.