XAPI covers storage, retrieval, modification, and querying of data in an XML database, with support for transaction management.
XAPI 涵盖了 XML 数据库中数据的存储、检索、修改和查询，以及对事务管理的支持。
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A thoroughly professional accounting system allows details concerning related documents to be stored in the system with the transaction details so that retrieval is quick and easy.
An OLTP environment is a database environment that facilitates and supports transaction-oriented workloads, which typically consist of numerous data entry and retrieval operations.