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Diploma in Databases and T-SQL

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Diploma in Databases and T-SQL
  • Description
  • Outcome
  • Certification
  • The free online course Diploma in Databases and T-SQL will introduce you to the core concepts of databases and their structure. You will also learn about retrieving data from a database using Structured Query Language (SQL) and using Microsoft’s variant Transact-SQL (T-SQL). You will learn about queries, and various constraints and clauses you can include in them. The course also teaches about administrative tasks you can perform on a database, from security to dealing with errors.

    The course begins by introducing you to databases and the key components of a database structure - normalization and referential integrity. You will also learn about objects that make up your database and the datatypes that you can save data as. The course teaches you about the Data Definition Language and how to create, alter and delete databases.

    You will be introduced to DML or Data Manipulation Language. This course teaches you about retrieving data from a database with the SELECT statement. You will learn to apply functions and clauses to your SELECT statement, and how to update and delete data in a database. The course also teaches about security levels and applying security to your databases.

    Next, you will learn about T-SQL and using the SELECT statement to create queries. You will learn about the various data types, working with them and using NULL values in your database. It also includes sorting and removing duplicates, using joins and knowing about different types of joins. You will learn about using INTERSECT and EXCEPT in your queries, and other functions you can use in your queries.

    Finally, you will be introduced to subqueries and their function. You will learn to use apply operators, present your data with views, build temporary tables, and pivot your data. The course also includes methods for modifying and deleting data in database tables, as well as using batches, comments and declaring variables for your queries. You will learn how to create conditional branching and looping within your queries. Lastly, you will learn about errors in a database engine, and how to delete them.

    This free Alison course will be of great interest to learners who wish to learn more about databases and the use of T-SQL to create queries for retrieving data from databases.

  • Having completed this course you will be able to: - Describe a database and give an example of real life uses. - List common database terms and explain their part in a database. - Describe normalization. - Explain three forms of normalization. - Describe referential integrity. - Recognize how constraints are part of referential integrity. - Describe different data types. - Discuss how to create a basic database. - Describe Data Definition Language (DDL) statements for creating databases. - Use the SELECT statement to retrieve data from your database. - Modify your database using INSERT, UPDATE AND DELETE. - Use aggregate functions with the SELECT statement. - Secure your database and its objects. - Add users and set their permission levels. - Backup and restore your data base. - Identify the elements of database engine errors. - Recognize the process error handling and catching errors in Transact-SQL code. - Discuss the concept of transactions. - Distinguish how to add data to a database using the INSERT function. - Indicate how to update and delete data from a database using the respective functions. - Explain creating variables for use within SQL queries. - Illustrate the importance of comments to describe SQL code - Identify programming constructs such as IF statements and loops in SQL queries. - Illustrate how to use subqueries within your queries. - Describe using APPLY operator to use SQL query results in another SQL query. - Describe a Temporary table, its uses and drawbacks. - Identify common table expressions(CTEs) in SQL queries. - Explain how to group data using GROUPING SET sub-clause of GROUP BY clause. - Describe pivoting data and unpivoting data using the PIOVT and UNPIVOT operators.

  • All Alison courses are free to study. To successfully complete a course you must score 80% or higher in each course assessments. Upon successful completion of a course, you can choose to make your achievement formal by purchasing an official Alison Diploma or Certificate.

    Having an official Alison document is a great way to celebrate and share your success. It is:

    • Ideal to include with CVs, job applications and portfolios
    • A way to show your ability to learn and achieve high results

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