✓ Used to create and maintain a database ✓ Uniquely identifies a record a. b. ✓ Table referenced in a foreign key relationship A group of related fields about one specific entity A relationship in which each occurrence of data in one entity is represented by multiple occurrences of the data in the other entity e. A relationship in which each occurrence of data in one entity is represented by only one occurrence of data in the other entity symbols represents a one-to-many relationship in an E-R model symbols represents a many-to-many relationship in an E-R model ✓a design that reduces or eliminates data redundancy and, therefore, avoids data anomalies ✓storage of the same data in different places of the database C. d. f. & h. 1. J. k. L lookup table a straight line with a crow's foot at both ends one-to-many primary key normalization some-to-many DBMS record unnormalized data one-to-one a straight line with a crow's foot at one end. a straight line with a smiley face at both ends

✓ Used to create and maintain a database ✓ Uniquely identifies a record a. b. ✓ Table referenced in a foreign key relationship A group of related fields about one specific entity A relationship in which each occurrence of data in one entity is represented by multiple occurrences of the data in the other entity e. A relationship in which each occurrence of data in one entity is represented by only one occurrence of data in the other entity symbols represents a one-to-many relationship in an E-R model symbols represents a many-to-many relationship in an E-R model ✓a design that reduces or eliminates data redundancy and, therefore, avoids data anomalies ✓storage of the same data in different places of the database C. d. f. & h. 1. J. k. L lookup table a straight line with a crow's foot at both ends one-to-many primary key normalization some-to-many DBMS record unnormalized data one-to-one a straight line with a crow's foot at one end. a straight line with a smiley face at both ends

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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