The main difference from the standard Moodle multiple choice question type is in the way that grading works. When creating the question, the teacher just indicates which choices are correct. If there are n correct choices, then the student scores 1/n for each correct choice. If they select too many choices, then incorrect choices outweigh correct ones.
DataPlus is a Moodle module that enables the production of customisable, portable, standalone SQLite3 databases for teaching and learning. It's features are similar to the Data module, but it allows easier export and search as well as improved performance for larger databases.