I want to work very portable, so I don't install a monster of Sql Server which has 2.7Gb size on my computer. I want to find an easier solution. I have for example a form application in Java which must to access a database (maybe a server), I thought it's easier for me to work with a portable database (Access or SqlLite).
It can be an installer solution but not very big such as 1Gb size or more. Initially thought to use a text file or Excel for keep the data but this way is hard too because I can't easily simulate the constraints and relationships between lines and tables.