It is something which you may be using and not even realise that it is Microsoft™ Access that you are using.
It can be quite easy to use, but if you want to use a more complex system or be able to get in and adjust the structure of the database, rather than just entering and retrieving date, then you will need some more advanced training.
There are several levels of certification and so you could just get the basic level, if that is all you feel will be necessary but if you want to make a really good impression, then you could go for all of them.
Having these certificates, shows that you have a great knowledge of the database, how to use it and how to design them, which should be of great advantage in many jobs.
Doing a training course will also show that you have a willingness to learn and that you are happy to take on new knowledge. It will also show that you are capable of doing further training. Something very important that it will also show is that you are willing to change.
Some people like working with the systems that they are used to, the ones they know and are not prepared to step out of their comfort zone and try something new.
However, by doing a course and getting a qualification in something it shows that you have a willingness to try something different. This could prove that you are willing to move upwards or across in your position at work and it may mean that they put you on more training courses which could lead to a pay rise.
It is well worth considering training as it could certainly work in your advantage.