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Keeping your skills current in today's world is becoming increasingly challenging. There are too many new technologies being developed, and little time to learn them all. The DB2® on Campus Book Series has been developed to minimize the time and effort required to learn many of these new technologies. This book helps new database professionals understand database concepts with the right blend of breadth and depth of information.
282 p dtu 11/12/2012 200 2
Từ khóa: Database Fundamentals, cơ sở dữ liệu, information models, mô hình thông tin, relational data models, mô hình dữ liệu
We extend RDF with the ability to represent property values that exist, but are unknown or partially known, using constraints. Following ideas from the incomplete information literature, we develop a semantics for this extension of RDF, called RDFi, and study SPARQL query evaluation in this framework.
21 p dtu 28/09/2012 221 1
Từ khóa: Incomplete Information in RDF, extend RDF, RDFi, study SPARQL query evaluation, relational databases, description logics, Open World Assumption, OWL 2,
This paper, the first step to connect relational databases with systems consequence (Kent: "System Consequence" 2009), is concerned with the semantics of relational databases. It aims to to study system consequence in the logical/semantic system of relational databases. The paper, which was inspired by and which extends a recent set of papers on the theory of relational database systems (Spivak: "Functorial Data Migration" 2012), is linked...
14 p dtu 28/09/2012 271 1
Từ khóa: semantics of relational databases, Database Semantics, semantic system of relational databases, databases, computer science, science and technology, cơ sở dữ liệu ngữ nghĩa
Fundamentals of relational database management systems
Information is a valuable resource to an organization. Computer software provides an efficient means of processing information, and database systems are becoming increasingly common means by which it is possible to store and retrieve information in an effective manner. This book provides comprehensive coverage of fundamentals of database management system. This book is for those who wish a better understanding of relational data modeling, its...
362 p dtu 22/09/2012 216 4
Từ khóa: cơ sở dữ liệu, hệ quản trị cơ sở dữ liệu, relational database, management systems, quản trị máy tính, computer software, processing information, relational data model