Coursera
SubscriptionThe Complete Oracle SQL course for Data Analysts -A-Z of SQL
4.4(242)15k studentsINTERMEDIATEEnglish
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The course describes itself as a more advanced beginners course. It aims at people who want to start pulling data out of an Oracle database and who are willing to install the software themselves.
Setup comes first: the course installs Oracle Database 21c Express and walks through the process before any queries are written. The early material is a concise primer on what SQL is and what it can do, covering queries, inserts, updates, deletes, tables, views, stored procedures and permissions.
One of the more practical points in the description is that SQL is a standard, yet every database adds its own extensions on top. The core commands such as SELECT, UPDATE, DELETE, INSERT and WHERE behave similarly across products, which makes Oracle-specific habits easier to carry over later.
Oracle database is one of the top and most widely used relational database management systems in the world .
This more advanced beginners course will teach you how to retrieve data from an oracle database.
We will start off by downloading and installing oracle database 21c express which is free to use.
What is SQL?
SQL stands for Structured Query Language
SQL lets you access and manipulate databases
SQL became a standard of the American National Standards Institute (ANSI) in 1986, and of the International Organization for Standardization (ISO) in 1987
What Can SQL do?
SQL can execute queries against a database
SQL can retrieve data from a database
SQL can insert records in a database
SQL can update records in a database
SQL can delete records from a database
SQL can create new databases
SQL can create new tables in a database
SQL can create stored procedures in a database
SQL can create views in a database
SQL can set permissions on tables, procedures, and views
SQL is a Standard - BUT Although SQL is an ANSI/ISO standard, there are different versions of the SQL language. However, to be compliant with the ANSI standard, they all support at least the major commands (such as SELECT, UPDATE, DELETE, INSERT, WHERE) in a similar manner.
Note: Most of the SQL database programs also have their own proprietary extensions in addition to the SQL standard!
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