A family of Microsoft relational database management systems designed for ease of use.
1. False. The template sets the data type of each column. Bear in mind that the tables created by the templates are very simplistic and not correctly normalized, however. This is a pointless, and potentially dangerous, feature in my view.
2. True. The lookup field wizard sets the data type of a column when you create it. Essentially it creates a numeric foreign key column which references the surrogate primary key of a referenced table. If the column already contains data it's values will probably be those which would be in a non-key column of the referenced table, most likely text values. Note that the lookup field wizard should be avoided like the plague. For reasons why see:
http://www.mvps.org/access/lookupfields.htm
3. While the template tables automatically include an ID autonumber key, and if you build a table yourself Access will offer to create such a key if you don't do so yourself, it is almost invariably better to create the key yourself. Bear in mind that the key might not be a single column, but a composite one of two or more columns, in which case you must define these as the key yourself. In such a situation, even if you add an autonumber column as the primary key, the multiple columns are still a candidate key, in which case they must be defined as such by inclusion in a single unique index.