'Nonkey attributes' diaporamas de présentation

Nonkey attributes - PowerPoint PPT Presentation

Normalization

Normalization

Normalization. Normalization theory is based on the observation that relations with certain properties are more effective in inserting, updating and deleting data than other sets of relations containing the same data Normalization is a multi-step process beginning with an “unnormalized” relation

★ ★ ★ ★ ★

2.23k views • 24 slides
พีชคณิตแบบสัมพันธ์ (Relational Algebra)

พีชคณิตแบบสัมพันธ์ (Relational Algebra)

บทที่ 3. พีชคณิตแบบสัมพันธ์ (Relational Algebra). อ. ดร. ชุรี เตชะวุฒิ. CS (204)321 ระบบฐานข้อมูล 1 (Database System I). Outlines. 1) Unary relational operations: SELECT and PROJECT 2) Relational algebra operations from set theory 3) Binary relational operations: JOIN and DIVISION

★ ★ ★ ★ ★

464 views • 23 slides
Department of Computer and Information Science, School of Science, IUPUI

Department of Computer and Information Science, School of Science, IUPUI

Department of Computer and Information Science, School of Science, IUPUI. Data Modeling Introduction and Normalization. Dale Roberts, Lecturer Computer Science, IUPUI E-mail: droberts@cs.iupui.edu. Sample Table. Sample Table Problems.

★ ★ ★ ★ ★

118 views • 9 slides
Normalization: 1NF, 2NF, 3NF

Normalization: 1NF, 2NF, 3NF

Normalization: 1NF, 2NF, 3NF. First normal form (1NF) – entity whose attributes have no more than one value for a single instance of that entity Any attributes that can have multiple values actually describe a separate entity, possibly an entity and relationship.

★ ★ ★ ★ ★

1.77k views • 4 slides

View Nonkey attributes PowerPoint (PPT) presentations online in SlideServe. SlideServe has a very huge collection of Nonkey attributes PowerPoint presentations. You can view or download Nonkey attributes presentations for your school assignment or business presentation. Browse for the presentations on every topic that you want.