If you are a web developer: Databases. I took an intro to databases course in college and even at that pretty beginner level, I still use what I learned in that class every day. Technology stacks may change, but data isn't going anywhere.
Yes I strongly agree. I had worked with new self-taught web developers and database skills was the most glaring thing they needed to learn. Knowing how to design a database to write SQL queries that has good enough read and write performance, knowing ACID concepts, knowing when transactions are needed, knowing the differences between SQL and no-SQL databases and to pick the best one to use rather than the easiest to use. Database is one of the most important things a web developer should know.
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If you are a web developer: Databases. I took an intro to databases course in college and even at that pretty beginner level, I still use what I learned in that class every day. Technology stacks may change, but data isn't going anywhere.
Easily the most fundamental skill to have besides algorithms and data structures.
Yes I strongly agree. I had worked with new self-taught web developers and database skills was the most glaring thing they needed to learn. Knowing how to design a database to write SQL queries that has good enough read and write performance, knowing ACID concepts, knowing when transactions are needed, knowing the differences between SQL and no-SQL databases and to pick the best one to use rather than the easiest to use. Database is one of the most important things a web developer should know.