MS Access DAO Object has Workspace Object *DBEngine(0)(0)* that has BeginTrans, CommitTrans and RollBack methods, and there are same or better functionalities with ADO, and they are all ACID compliant, so this implies Access, atleast, support transactional operations.
Also Access has linked table manager to link to ODBC Datasources like MSSQL, MySQL etc. or onother Access database, the later assume a Split architecture of Frontend/Backend is used, the Frontend has the Forms, Queries, Reports and Modules of code etc. while the Backend has the relational tables.
It would not be bad or uncommon to use access as a frontend to full pledged RDBMS like MySQL, Access would do a very nice connectivity job for you, so capacity, scalability, availability and maintenance issues etc. that are attributed to access would thus be avoided.
HTH

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GoodLuck!