Abstract: Various arrangements for reducing a size of a Business Process Execution Language (BPEL) data blob for storage may be presented. One or more dehydration points within compiled BPEL code may be identified. A liveness analysis for the one or more dehydration points may be performed. At each of the one or more dehydration points, one or more live variables from a set of variables may be identified. An optimization data structure may be created for each dehydration point identifies the one or more live variables.

Abstract: Information hierarchies are efficiently stored and accessed in a relational or object-relational database system. A path signature, similar to a pathname, is stored in a database system in association with data for the node identified by the pathname. For example, a path signature identifying an element is stored in a row that holds data for the element. To retrieve data for a hierarchical query that identifies the data requested using, for example, an XPATH string, a string pattern is generated that is matched by path signatures identified by the XPATH string. Pattern matching is then used to select rows associated with matching path signatures, and data from the selected rows is used to compute the XPATH query. Furthermore, hash values representing path signatures are generated in a way that preserves the ordering of data in an information hierarchy. The hash values can be indexed to provide quick access.

Abstract: Various arrangements for reducing a size of a Business Process Execution Language (BPEL) data blob for storage may be presented. One or more dehydration points within compiled BPEL code may be identified. A liveness analysis for the one or more dehydration points may be performed. At each of the one or more dehydration points, one or more live variables from a set of variables may be identified. An optimization data structure may be created for each dehydration point identifies the one or more live variables.

Abstract: Information hierarchies are efficiently stored and accessed in a relational or object-relational database system. A path signature, similar to a pathname, is stored in a database system in association with data for the node identified by the pathname. For example, a path signature identifying an element is stored in a row that holds data for the element. To retrieve data for a hierarchical query that identifies the data requested using, for example, an XPATH string, a string pattern is generated that is matched by path signatures identified by the XPATH string. Pattern matching is then used to select rows associated with matching path signatures, and data from the selected rows is used to compute the XPATH query. Furthermore, hash values representing path signatures are generated in a way that preserves the ordering of data in an information hierarchy. The hash values can be indexed to provide quick access.