Databases Series

This course provides you with a core understanding of the need for databases, the way they are structured, and the type of information they can hold. It describes the types of database models that you are likely to encounter and describes their pros and cons. The use of a Database Management System (DBMS) is discussed, providing examples of functionality and features that are often employed by users of it. Finally, you will see how a database is defined and configured, along with the types of tasks that need to be performed as part of this process.

This course begins by providing you with an overview of SQL functionality, and describes how SQL is used to obtain data from a database table. Once data has been obtained there are many scalar and aggregate functions that can be used for purposes such as creating a subset of that data, or manipulating the data itself into another format. This is discussed in detail. Finally, you will see how data can be added to a database, and how it can be modified, and deleted.

This course provides you with more in-depth uses of SQL. It begins by examining how data from multiple tables can be joined together, and how different types of JOIN statements can be used to achieve your goal. You will also see how specific data can be selected from tables and how conditional operations can be invoked based on data values. The merging of results from multiple SELECT statements is also presented. Finally, you will see how a SELECT query can exist within another SELECT statement. These are called subqueries.

This course starts by providing you with the methods used to create a database and its components. It then introduces you to the commands used to alter database component attributes and shows you how to remove data. You will see how commonly used instructions can be saved as a stored procedure, and the benefits they provide. You will then look at user-defined functions (UDFs), how they are created, and how they differ from stored procedures. Finally, you will be presented with various methods for securing your database.

This course describes how local and remote clients can connect to a DBMS server. It discusses connection options including the use of APIs. You will also see how an administrator can view existing client connections and configure the DBMS to place restrictions on client activity. Finally, you will see how replication provide copies of database systems on alternate DBMS servers. This is useful for redundancy purposes.