For accessing a database, a request attribute module constructs a request attribute list for a data value name received in a request block. The request attribute list associates the data value name with an attribute name and with a schema name. A schema name module adds the schema name from the request attribute list to a schema names list in response to the schema name not being included in the schema names list. An attribute name module adds the attribute name from the request attribute list to an attribute names list in response to the attribute name not being included in the attribute names list. A query build module builds a query statement directed to a target database from the schema names list and the attribute names list.