A federated architecture for information management
ACM Transactions on Information Systems (TOIS)
Markup systems and the future of scholarly text processing
Communications of the ACM
Federated database systems for managing distributed, heterogeneous, and autonomous databases
ACM Computing Surveys (CSUR) - Special issue on heterogeneous databases
Interoperability of multiple autonomous databases
ACM Computing Surveys (CSUR) - Special issue on heterogeneous databases
A query language for retrieving information from hierarchical text structures
The Computer Journal - Special issue on information systems
Fundamentals of database systems (2nd ed.)
Fundamentals of database systems (2nd ed.)
An approach for building an integrated environment for molecular biology databases
Distributed and Parallel Databases
Integrating contents and structure in text retrieval
ACM SIGMOD Record
Atlas: A Nested Relational Database System for Text Applications
IEEE Transactions on Knowledge and Data Engineering
Mind Your Grammar: a New Approach to Modelling Text
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
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A language for manipulating ASN.1 print files is defined as an addition to the ASN.1 data definition language as specified in the ISO standards 8824 and 8825. The language has syntax similar in spirit to SQL, and provides analogous operations. Together, ASN.1 and the manipulation language define a model that can represent attribute hierarchies, multivalued attributes, optional attributes, both ordered and unordered attributes and tuples, and unnamed attributes—constructs that are absent in the traditional relational model. In addition, the proposed model allows the semantics of order, homogeneity, optionality, choosability, and uniqueness to be attached to constructs and construct elements. The approach is well suited for modeling data where form is important, such as text and flat file databases having ad hoc formats. It also supports modeling relations. The primary motivation for developing this language is to provide a common model for a database integration approach where some of the databases are in the form of formatted flat file text, while others are relational. Although the approach is general and can be applied in many different areas, scientific database and tool integration was the primary motive for its development.