Smalltalk-80: the language and its implementation
Smalltalk-80: the language and its implementation
SMALLTALK-80: the interactive programming environment
SMALLTALK-80: the interactive programming environment
The INGRES papers: anatomy of a relational database system
The INGRES papers: anatomy of a relational database system
Encapsulators: a new software paradigm in Smalltalk-80
OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
Design of a distributed object manager for the Smalltalk-80 system
OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
Development of an object-oriented DBMS
OOPLSA '86 Conference proceedings on Object-oriented programming systems, languages and applications
Indexing in an object-oriented DBMS
OODS '86 Proceedings on the 1986 international workshop on Object-oriented database systems
On optimistic methods for concurrency control
ACM Transactions on Database Systems (TODS)
ACM Computing Surveys (CSUR)
Transparent forwarding: First steps
OOPSLA '87 Conference proceedings on Object-oriented programming systems, languages and applications
AVANCE: an object management system
OOPSLA '88 Conference proceedings on Object-oriented programming systems, languages and applications
On accessing object-oriented databases: expressive power, complexity, and restrictions
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
The 3DIS: an extensible object-oriented information management environment
ACM Transactions on Information Systems (TOIS)
Design of the Mneme persistent object store
ACM Transactions on Information Systems (TOIS)
An object-oriented software application architecture
ICSE '90 Proceedings of the 12th international conference on Software engineering
The GemStone object database management system
Communications of the ACM
Working with Persistent Objects: To Swizzle or Not to Swizzle
IEEE Transactions on Software Engineering
Object fault handling for persistent programming languages: a performance evaluation
OOPSLA '93 Proceedings of the eighth annual conference on Object-oriented programming systems, languages, and applications
Transaction synchronisation in object bases
Proceedings of the seventh ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
MORE: An Object-Oriented Data Model with a Facility for Changing Object Structures
IEEE Transactions on Knowledge and Data Engineering
Conceptual Database Evolution Through Learning in Object Databases
IEEE Transactions on Knowledge and Data Engineering
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Object-oriented database servers are beginning to appear on the commercial market in response to a demand by application developers for increased modeling power in database systems. Before these new servers can enhance the productivity of application designers, systems designers must provide simple interfaces to them from both procedural and object-oriented languages. This paper first describes a successful interface between an object server and two procedural languages (C and Pascal). Because C and Pascal do not support the object-oriented paradigm application, designers using these languages must deal with database objects in less than natural ways. Fortunately, workstations supporting object-oriented languages have the potential for interacting with database objects in a much more integrated manner. To integrate these object-oriented workstations with an object server, we provide a design framework based on the notion of workstation agent objects representing principal objects in the database. We distinguish two types of agents: proxies, which forward most messages to the principal objects, and deputies, which can cache state for their principal and act with more autonomy. The interaction of cache, transaction, and message management strategies makes the implementation of deputies a nontrivial problem. The agent metaphor is being used currently to integrate an object server with a Smalltalk-8O™ workstation.