oh, i see, the documentation in the examples is n german ...
ok, here is some explanation:
first of all, all ADO-Toolkit VIs have a context help, which give you a hint, what they do.
second: use MS Access and take a look at the database and take a look at the relations.
adobsb.mdb is a simple database which simulates a measurement-DB:
there are 3 tables: users, measurement and measurment data (tbl_user, tbl_messung, tbl_messwert)
in the measurment table, the timestamp of start and end of the measurment are stored, plus the information, who made the measurment (referenced by fk_user)
in the data table, all measurement data are stored, referenced by the information, to which measurement they belong (referenced by fk_messung)
the first demo opens a database and executes a query, receives the data and parses them into an 1D Array of LabVIEW data:
the second example shows how to insert data ...