LIBRIS titelinformation: Databasteknik / Thomas Padron-McCarthy, Tore Risch. 6 Oct DATABASTEKNIK (database technology) – 1MB Fall , UU logo. NEWS. – Exam results from the exam can be found. 6 Oct Här hittar ni kursinformation och kursmaterial för kursen Databasteknik – 1DL KURSLITTERATUR. Elmasri & Navathe: Fundamentals of.

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A database consists of a logical coherent collection of data with an underlying meaning.

Databasteknik (VT) – Computing Science – Umeå University, Sweden

A track is divided into smaller blocks or sectors The division of a track into sectors is hard-coded on the disk surface and cannot be changed. On average, main memory accesses. Not everything is displayed on an ER diagram. Published by Eleanore Baldwin Modified over 3 years ago.


Most of the course contents will be covered in the lectures and in the exercises, but it is nevertheless necessary to use your own time to read the course literature and to work with the course material and the computer. Nouf Almujally 1 Ref. Relationships are shown in diamonsds. This book is not yet featured on Listopia. Published by Liliana Lazenby Modified over 4 years ago.


Oliver Propst added it Jan 13, Go back to the previous slide. My presentations Profile Feedback Log out.

Databasteknik (VT-16)

An each entity has attributes. Johannes rated it really liked it Jul 14, The disk block is of size bytes unspanned allocation. Sometimes, the applications are also included.

N J rated it liked it Oct 14, Existance vs identification; cardinality differences total participation: We think you have liked this presentation.

To ask other readers questions about Databasteknikplease sign up. Erik added it Mar 08, Every entity of these subclasses All salesman, engineers, managers and project leaders are also employees.

Records are allocated to file blocks. Hence, Cheap record addition.

LIBRIS – Databasteknik /

That means that an databastekink can be a member of at most one of the subclass. Connected to entity types by straight lines. DL types are tight to the table definition. Alexandra Kumppani rated it liked it Jan 27, Works for primary, clustering and secondary indexes as long as the first level index has a distinct index value for every entry. Milena Koparanova, labassistent epost: It is called total participant.


So a owner can owns any number of car, but a car can only be related to one owner. Elmar Aliyev rated it liked it Sep 08, Allows the user to extend types. More than two entity types can participant in a relationship type. Magnus added it Dec 01, M, a weak entity is identified by two owner entities. The emphasis is databasteknjk the relational model.

In ER diagram, cardinality ratio is displayed by the number. Navathe Slide 1- 1. Ramon Lawrence at the University of Iowa.