Oracle SQL Tutorial


Oracle SQL SQL Advanced SQL Tuning

SQL (Structured Query Language) is everywhere, and in today’s digitalized world with massive amounts of data being gathered every day and stored into a database, knowing how to program with SQL is imperative.

All SQL operations are classified into one of four general things you do to tables:

  • Create/Put data into tables.
  • Read data out of a table.
  • Update data already in a table.
  • Delete data from the table.

This has been given the acronym “CRUD” and is considered a fundamental set of features every data storage system must have.

Let’s take an analogy here… Let’s relate how SQL works by comparing it to a spreadsheet software like Excel:

  • A database is a whole spreadsheet file.
  • A table is a tab/sheet in the spreadsheet, with each one being given a name.
  • A column is a column in both.
  • A row is a row in both.
  • SQL then gives you a language for doing CRUD operations on these to produce new tables or alter existing ones.

Whether you’re a marketer or an aspiring developer, SQL is a great language to learn…

Interested in SQL Career

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Throughout the course I will be using the below methodology to make you think and help in forming the SQL statement.