To define, query, insert, change, and delete data in an SAP MaxDB database, you use the Structured Query Language (SQL). More information: SQL

The database system executes SQL statements within transactions, which are sequences of SQL statements. More information: Transactions

Multiple transactions can access the same database object, such as a table, at the same time. To isolate the transactions from one another, the database system sets locks for database objects. More information: Locks