作者: instill 時間: 2025-3-21 22:11 作者: 弄臟 時間: 2025-3-22 01:38
Computer Science Serieshttp://image.papertrans.cn/d/image/263389.jpg作者: 緯度 時間: 2025-3-22 06:14
https://doi.org/10.1007/978-1-349-13722-0architectures; database; database administration; database management; database system; DBMS; relational d作者: vitrectomy 時間: 2025-3-22 11:31
P. Beynon-Davies 1996作者: Condense 時間: 2025-3-22 13:05 作者: Condense 時間: 2025-3-22 20:22 作者: 污點 時間: 2025-3-22 22:29
Constitutionalism Under Extreme ConditionsIn chapters 6 to 8 we have discussed the component parts of a DBMS in vendorindependent terms. In chapter 9 we discussed the distribution of components and data. In this chapter we provide an overview of two prominent commercial DBMS, one relational the other object-oriented. Our aim is to illustrate the functionality of existing DBMS products.作者: fastness 時間: 2025-3-23 04:28
Key ConceptsIn this chapter we broaden the discussion of chapter 1 by establishing an initial definition for some of the major concepts which are discussed in chapters which follow: database, database management system, data model. All three concepts are bundled together closely in the process of database development.作者: GUMP 時間: 2025-3-23 07:02
DBMS-KernelIn this chapter we describe some of the operational issues we would expect to find characterising the kernel of any DBMS. We shall discuss such features particularly with reference to relational DBMS. We begin however with a brief discussion of the physical storage of data on disk devices.作者: NUL 時間: 2025-3-23 11:19
Two Commercial DBMSIn chapters 6 to 8 we have discussed the component parts of a DBMS in vendorindependent terms. In chapter 9 we discussed the distribution of components and data. In this chapter we provide an overview of two prominent commercial DBMS, one relational the other object-oriented. Our aim is to illustrate the functionality of existing DBMS products.作者: 畫布 時間: 2025-3-23 14:59
The Contribution of Business Interestsid the foundation for probably the most popular of the contemporary data models. From 1968 to 1988 Codd published more than 30 technical papers on the Relational Data Model. He refers to the total content of the pre-1979 papers as version one of the Relational Data Model (Codd, 1990).作者: CALL 時間: 2025-3-23 19:21
The UK Constitution and the European Unionme of the major objectives, advantages, and disadvantages of distributed systems. This leads us to a discussion of some of the major types of distributed database system. We conclude with a detailed look at client-server database systems.作者: 合唱團 時間: 2025-3-24 00:16
Vergleichende Politikwissenschaftsome system without any detail of implementation. The objective of this chapter is to describe the major components of a database system without introducing any formal notation, or introducing any concepts of representation, development or implementation. Concepts of representation are considered in作者: 交響樂 時間: 2025-3-24 06:03 作者: Interdict 時間: 2025-3-24 08:07 作者: fringe 時間: 2025-3-24 14:11
Justus Sch?nlau,Dario Castiglione overtake relational database systems by the mid 1990s (OVUM, 1988). Although this clearly has not happened, there is no doubt that object-oriented concepts are influencing the development of information systems. As evidence of this many relational DBMS vendors are beginning to offer OO features and作者: 吝嗇性 時間: 2025-3-24 15:19 作者: 假 時間: 2025-3-24 22:58
https://doi.org/10.1007/978-1-349-15077-9 functions such as storage and concurrency control. The interface comprises generally some database sub-language such as SQL. Around this standard interface most vendors offer a range of additional software tools for producing information systems. We call this collection the DBMS toolkit. Thus the c作者: 大酒杯 時間: 2025-3-25 00:14
The UK Constitution and the European Unionme of the major objectives, advantages, and disadvantages of distributed systems. This leads us to a discussion of some of the major types of distributed database system. We conclude with a detailed look at client-server database systems.作者: PALMY 時間: 2025-3-25 04:01
https://doi.org/10.1007/978-3-030-49000-3 distinguish between two key roles which have emerged with the rise of database systems: the database administrator and data administrator. The data administrator is now one of the key persons involved in the development of databased information systems. We also describe some of the key functions of作者: 費解 時間: 2025-3-25 11:23 作者: 憎惡 時間: 2025-3-25 12:32 作者: Brittle 時間: 2025-3-25 17:56
Francesco Palermo,Alice Valdesaliciim of this chapter is to portray how conceptual modelling as applied to database systems can move relatively painlessly into the domain of OO. We will discuss how OO analysis, an approach primarily directed at the building of applications in procedural or objectoriented languages, is equally relevan作者: A簡潔的 時間: 2025-3-25 22:37 作者: 不舒服 時間: 2025-3-26 03:25
Databases as Abstract Machinessome system without any detail of implementation. The objective of this chapter is to describe the major components of a database system without introducing any formal notation, or introducing any concepts of representation, development or implementation. Concepts of representation are considered in作者: 污穢 時間: 2025-3-26 07:03 作者: LURE 時間: 2025-3-26 11:16
Classic Data Modelsthe idea of a classic data model in terms of record-orientation. In this sense, we might include the relational data model in amongst the classic data models. Here, the network and hierarchical data models are also described as being classic in the sense that they formed the basis for the first comm作者: intention 時間: 2025-3-26 13:29 作者: CYN 時間: 2025-3-26 16:59
DBMS Interface – SQLpractice is primarily centred around a language known as SQL (Structured Query Language). SQL was originally designed as a query language based on the relational calculus (section 3.3.11). The current specification of SQL is however much more than simply a query language. It is more accurately descr作者: 全部 時間: 2025-3-26 23:05
DBMS Toolkit functions such as storage and concurrency control. The interface comprises generally some database sub-language such as SQL. Around this standard interface most vendors offer a range of additional software tools for producing information systems. We call this collection the DBMS toolkit. Thus the c作者: 商品 時間: 2025-3-27 01:10 作者: 狂熱文化 時間: 2025-3-27 08:46 作者: gusher 時間: 2025-3-27 09:56
Normalisationrinciples were originally formalised in terms of three normal forms: first normal form, second normal form and third normal form. The process of transforming a database design through these three normal forms is known as normalisation. By the mid-1970s third normal form was shown to have certain ina作者: ATRIA 時間: 2025-3-27 15:21 作者: 無情 時間: 2025-3-27 20:51 作者: 謙卑 時間: 2025-3-28 00:39
Physical Database Designical database design involves taking the results from the logical design process, fine-tuning them against the performance and storage requirements of some application and then implementing them in the mechanisms of some DBMS. With the rise of the relational data model, the emphasis has changed in t作者: 吹牛需要藝術(shù) 時間: 2025-3-28 05:48
Textbook 1996Latest editiont concludes by reviewing two existing DBMS: one relational; the other object-oriented.Part three presents a discussion of the major techniques utilised in the design and implementation of database systems. The issue of administering data in organisations is also considered.Part four considers new ap作者: 相信 時間: 2025-3-28 09:34
d. The part concludes by reviewing two existing DBMS: one relational; the other object-oriented.Part three presents a discussion of the major techniques utilised in the design and implementation of database systems. The issue of administering data in organisations is also considered.Part four considers new ap作者: Anterior 時間: 2025-3-28 10:44 作者: PET-scan 時間: 2025-3-28 15:09
Databases as Abstract Machinesducing any formal notation, or introducing any concepts of representation, development or implementation. Concepts of representation are considered in part 1; concepts of implementation are considered in part 2; concepts of development are considered in part 3.作者: Painstaking 時間: 2025-3-28 19:58 作者: 硬化 時間: 2025-3-28 23:55 作者: CHOIR 時間: 2025-3-29 06:38 作者: 臆斷 時間: 2025-3-29 08:59 作者: 古代 時間: 2025-3-29 13:35 作者: cutlery 時間: 2025-3-29 18:53 作者: 蚊子 時間: 2025-3-29 22:24 作者: Panacea 時間: 2025-3-30 02:48
Francesco Palermo,Alice Valdesalici modelling (Blaha . 1988). In this chapter we consider some of the common threads between entity-relationship and objectoriented analysis and discuss some proposals for extending entity-relationship modelling into an object modelling approach.作者: BUDGE 時間: 2025-3-30 05:13
https://doi.org/10.1057/9781137288998 Nowadays, the emphasis is clearly directed at logical database design. This is primarily because some success has been achieved in formalising logical design. Physical design, in comparison, is relatively unformalised.作者: 碌碌之人 時間: 2025-3-30 10:50 作者: 軟膏 時間: 2025-3-30 15:07
Object Modelling modelling (Blaha . 1988). In this chapter we consider some of the common threads between entity-relationship and objectoriented analysis and discuss some proposals for extending entity-relationship modelling into an object modelling approach.作者: Mobile 時間: 2025-3-30 19:26 作者: 慎重 時間: 2025-3-31 00:46
abase systems. The book was developed from the author‘s experiences of running a number of academic and commercial courses on database technology for more than seven years.The text is organised into a number of parts. The introductory chapters set the scene for the core of the text. First, the key f作者: invert 時間: 2025-3-31 04:43 作者: certitude 時間: 2025-3-31 08:05
Nieves Pérez-Solórzano Borragán models. Here, the network and hierarchical data models are also described as being classic in the sense that they formed the basis for the first commercially available DBMS. Although currently relational systems have tended to outstrip network or hierarchical DBMS, a large number of legacy systems still exist running under these approaches.作者: cortisol 時間: 2025-3-31 12:28
The UK Constitution and the European Union relational calculus (section 3.3.11). The current specification of SQL is however much more than simply a query language. It is more accurately described as being a database sublanguage. Indeed, this database sub-language is becoming the standard interface to relational and non-relational DBMS.
