A database administrator manages the database of corporations and firms. Data is important and hence a competent database administrator is highly valued.
To start out as a database administrator, you should know SQL well. SQL stands for Structured Query Language. SQL is the standard way to issue command to database servers.
Companies like Microsoft, Oracle and IBM have competing database software products. You can go for training or courses first, then get certified for specific databases such as Microsoft SQL Server to give you the extra edge.
In general, knowledge of sql statement syntax to join, select, insert, update, delete a record is a must. Beginners can try some online sql tutorial to gain some insight into this field of work. Stored procedure is also commonly used, so it is good to know too.
Database products can also have specific functions. To learn these additional functions, you need to check out the sql documentation of the vendor eg. ms sql, pl sql, transact sql etc.
Some web host provides sql server hosting when you host your website with them. If you have a website, you can try some sql programming for your website. Some web hosts provide free databases using MySQL AB, which is an open source database.
Once you are comfortable with SQL, look for software tools (eg. sql editor) to assist in sql database design, provide sql language reference and help.
After an introduction to sql, look for words associated with the sql databases in this word search puzzle.