Real World Oracle SQL Queries Examples

Structured Query Language (SQL) is the set of statements with which all programs and users access data in an Oracle database. Application programs and Oracle tools often allow users access to the database without using SQL directly, but these applications in turn must use SQL when executing the user’s request.

An Oracle database is a collection of data treated as a unit. The purpose of a database is to store and retrieve related information. A database server is the key to solving the problems of information management. In general, a server reliably manages a large amount of data in a multiuser environment so that many users can concurrently access the same data. All this is accomplished while delivering high performance. A database server also prevents unauthorized access and provides efficient solutions for failure recovery.

Oracle Database is the first database designed for enterprise grid computing, the most flexible and cost effective way to manage information and applications. Enterprise grid computing creates large pools of industry-standard, modular storage and servers. With this architecture, each new system can be rapidly provisioned from the pool of components.

Data is so vital and we interface with  it in our daily lives.

Data is stored in databases which in turn stores the data in tables that contains rows and columns.

There are several database applications available to handle the storage and management of data examples include Oracle, Microsoft SQL and MySQL. We need a way to communicate with these database applications and the language used in doing that is SQL which stands for structured query language.

This course is a hands-on practical course that will build your confidence using SQL. All the queries used in this course are from a real world live production environment except that the table’s database and schema are different.

This course is video based and under 2 hours long with easy to follow real world query examples.

The example real world queries in this course includes:

• Creating various reports using SQL

• Creating a new table in a schema

• Performing count operations on a table

• Adding new record into a database

• Deleting records from a database

• Sorting query results in descending or ascending order

• Reading and filtering data from a database

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Frequently Asked Questions

How long do I have access to the course materials?

You can view and review the lecture materials indefinitely, like an on-demand channel.

Can I take my courses with me wherever I go?

Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don’t have an internet connection, some instructors also let their students download course lectures. That’s up to the instructor though, so make sure you get on their good side!