Data Base Computers

Hsiao, David K.

doi:10.1016/s0065-2458(08)60032-7

Cited by 19 publications

(5 citation statements)

References 42 publications

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“…3)), defined by two axioms according to (15.1) and (15.2). The query under consideration, q, is given by (16): "What are the names of employees who are subordinate to J and work in a department selling balls?" A system graph representing this example is depicted in Figure 8.…”

Section: A Csp Description Of Prodmentioning

confidence: 99%

“…The ax-processor at node 4 has received R4, R5, R2 from all its immediate predecessors, e, b, d, and, according to the query (16), it performs the following inference: INF = ~eol((ub~r(R5)) ,,y#, R4 <,"1",, (wd2=6a,LR2))) = 0, Because INF = 0, no message is sent to s, while R8, R9 ( Figure 11) are returned as requests to e, d, respectively.…”

Section: A Csp Description Of Prodmentioning

confidence: 99%

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A problem-oriented inferential database system

Lozinskii

1986

ACM Trans. Database Syst.

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Recently developed inferential database systems face some common problems: a very fast growth of search space and difficulties in recognizing inference termination (especially for recursive axioms). These shortcomings stem mainly from the fact that the inference process is usually separated from database operations. A problem-oriented inferential system i8 described which refers to the database prior to query (or subquery) processing, so that the inference from the very beginning is directed by data relevant to the query. A multiprocessor implementation of the system is presented based on a computer network conforming to database relations and axioms. The system provides an efticient indication of query termination, and is complete in the sense that it produces all correct answers to a query in a finite time.

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Section: A Csp Description Of Prodmentioning

confidence: 99%

Section: A Csp Description Of Prodmentioning

confidence: 99%

A problem-oriented inferential database system

Lozinskii

1986

ACM Trans. Database Syst.

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“…A taxonomy of the architectural configurations of database systems can be found in the preface of [Hsia83]. Similar and simplified taxonomies have appeared in [Cham78,Hsia80]. The conventional approach to database management has the database-system software running as an applications program on a mainframe computer system.…”

Section: The Multi-backend Database System (Mbds)mentioning

confidence: 99%

New Directions in Database-Systems Research and Development

Demurjian¹,

Hsiao²

1985

Self Cite

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In this paper, three new directions in database-systems research and jevelopment are indicated. One new direction is the emergence of the multilingual database systems where a single database system can execute many transactions written respectively in different data languages and support many databases structured correspondingly in various data models. Thus, a multilingual database system allows the old transactions and existing databases to be migrated to the new system, the user to explore the strong features of the various data languages and data models in the same system, the hardware upgrade to be focused DD F0RM W f JAN 73 1473 EDITION OF 1 NOV S3 |$ OBSOLETE S/N 0102-LF-0t4-6601 SECURITY CLASSIFICATION OF THIS RAGE fWW. Dmtm tmtmmd) unclassified SECURITY CLASSIFICATION OF THIS PACE (Whtt D«l« Enfrmd) on a single system instead of a heterogeneous collection of database systems, and the database application to cover wider types of transactions and interaction in the same environment. One other new direction is the emphasis of the multi-backend database systems where the database system is configured with a number of microprocessor-based processing units and their disk subsystems. These processing units and disk subsystems are called database backends. The unique characteristics of the backends are that the number of the backends is variable, the system software in all of the backends is identical, and the multiplicity of the backends is proportional to the performance and capacity of the system. Thus, for the first time, a multi-backend database system enables the user to relate the amount of hardware used (i.e., the number of the backends) to the degree of performance gain and capacity growth of the system. The third new direction is the possibility of the multi-host database systems where a single database system can communicate with a variable number and heterogeneous collection of mainframes in several different data languages and allow the mainframes to share the common database store and access. This paper attempts to articulate the background, benefits, requirements and architectures of these new types of database system, namely, the multi-lingua the multi-backend, and the multi-host database systems.

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“…For the case of moving head digital disks, it is reported that there is already progress made in reconfiguring the heads and controller such that all the tracks of a cylinder can be read in parallel in one revolution (Hsiao 1980). Widening of the data bus can then easily achieve transfer rates of up to several megabytes per second.…”

Section: Proementioning

confidence: 99%

Digital image processing systems and remote sensing†

Ince

1983

International Journal of Remote Sensing

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Data Base Computers

Cited by 19 publications

References 42 publications

A problem-oriented inferential database system

A problem-oriented inferential database system

New Directions in Database-Systems Research and Development

Digital image processing systems and remote sensing†

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