Abstract: A method for validating data changes made to a database is disclosed. The changes are made in the context of a transaction, and validation is performed using a rules database storing a plurality of rules. The method includes identifying a set of data entities affected by one or more data changes made in the context of the transaction. In response to an instruction to commit the transaction, data entities in the set of affected data entities are validated using rules from the rules database. The transaction is committed in dependence on the outcome of the validation.

Abstract: A method for validating data changes made to a database is disclosed. The changes are made in the context of a transaction, and validation is performed using a rules database storing a plurality of rules. The method includes identifying a set of data entities affected by one or more data changes made in the context of the transaction. In response to an instruction to commit the transaction, data entities in the set of affected data entities are validated using rules from the rules database. The transaction is committed in dependence on the outcome of the validation.

Abstract: A method for validating data changes made to a database is disclosed. The changes are made in the context of a transaction, and validation is performed using a rules database storing a plurality of rules. The method includes identifying a set of data entities affected by one or more data changes made in the context of the transaction. In response to an instruction to commit the transaction, data entities in the set of affected data entities are validated using rules from the rules database. The transaction is committed in dependence on the outcome of the validation.

Abstract: A method for validating data changes made to a database is disclosed. The changes are made in the context of a transaction, and validation is performed using a rules database storing a plurality of rules. The method includes identifying a set of data entities affected by one or more data changes made in the context of the transaction. In response to an instruction to commit the transaction, data entities in the set of affected data entities are validated using rules from the rules database. The transaction is committed in dependence on the outcome of the validation.

Abstract: An information providing system comprises means for reading information feeds from one or more sources which are designed to be machine readable rather than user readable, one or more of said feeds having content expressed as a number of entries where each entry incorporates a spatial reference, means for assessing a user's interest in order to match a user's interest to content obtained from said feeds and means for providing to a user content from said spatially referenced feeds, whereby the content closely matches the user's spatial interest.

Abstract: A method of generating data representative of a geographical network (such as a road network) is disclosed, comprising steps of selecting from a database (2) data relating to an extended junction (formed from at least one node at least one edge) and outputting the selected data. The method address problems in existing devices relating to the selection of appropriate data, and finds particular application in the field of mobile devices and the like. Apparatus for generating data representative of a geographical network and a method of providing a graphical schematic of a location are also disclosed.

Abstract: A method of generating data representative of a geographical network (such as a road network) is disclosed, comprising steps of selecting from a database (2) data relating to an extended junction (formed from at least one node at least one edge) and outputting the selected data. The method address problems in existing devices relating to the selection of appropriate data, and finds particular application in the field of mobile devices and the like. Apparatus for generating data representative of a geographical network and a method of providing a graphical schematic of a location are also disclosed.