Databases are universal - they underlie the technology you use every day. They're a crucial component of everything from telecommunications systems, banking systems, and video games to just about any other software system that maintains some amount of persistent data.

In this course, you'll learn about the fundamental concepts of databases, why and when they're used, what relational databases are, and entity-relationship diagrams. You will also be exposed to techniques like normalization that help to increase the efficiency of databases. You'll wrap up with a look at the basics of Structured Query Language (SQL). 

After completing this course, you will be able to move onto more advanced courses involving database systems and SQL.

Database Design Fundamentals for Software Engineers

## Alias syntax

You can rename a table or a column temporarily by giving another name known as an **Alias**. The use of table aliases is to rename a table in a specific SQL statement. Column aliases are used to rename a table's columns for a particular SQL query. This renaming is a temporary change and the actual table/column name does not change in the database.

### Syntax of a table alias

The basic syntax of a `table alias` is as follows:

```sql
SELECT column1, column2 ... columnN

FROM table_name AS alias_name

WHERE condition;
```


### Example

For our example, we will be using the following tables:

# Alias syntax

You can rename a table or a column temporarily by giving another name known as an **Alias**. The use of table aliases is to rename a table in a specific SQL statement. Column aliases are used to rename a table's columns for a particular SQL query. This renaming is a temporary change and the actual table/column name does not change in the database.

## Syntax of a table alias

The basic syntax of a `table alias` is as follows:

```sql
SELECT column1, column2 ... columnN

FROM table_name AS alias_name

WHERE condition;
```


## Example

For our example, we will be using the following tables:

In this lesson, we will learn about assigning aliases to tables and columns.

Introduction

Fundamental Concepts

Data Modeling

Entity-Relationship Data Model

The Relational Data Model

Functional Dependencies

Normalization

Structured Query Language

Conclusion

Alias Syntax

Alias syntax

Syntax of a table alias

Example