Question 12.1 Use the object definition language ODL of the ODMG object model to specify an object database schena klass definitions) capturing the requirements from the following ER diagram about a publisher enterprise. Note that you can use any appropriate data types for your schema design, and no specification of behavior is required. Catato Name Tide M Publcaton Produce Publisher Page count Format Medum Address Duraton City Sreet Book Recording Questions 12.2 ts) List two popular heuristic rules used by a heuristic-based query optimizer in a relational DBMS.

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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Note: there are two sub-questions for this question.
Question 12.1
) Use the object definition language ODL of the ODMG object model to specify an object database schena (class definitions) capturing the
requirements from the following ER diagram about a publisher enterprise. Note that you can use any appropriate data types for your schema design, and no
specification of behavior is required.
Cataloy
Name
Tide
Cry
Pubicaton
Produce
Pubisher
Page count
Format
Madum
Address
Duration
City
Sreet
Book
Recording
Questions 12.2
ts) List two popular heuristic rules used by a heuristic-based query optimizer in a relational DBMS.
Transcribed Image Text:Note: there are two sub-questions for this question. Question 12.1 ) Use the object definition language ODL of the ODMG object model to specify an object database schena (class definitions) capturing the requirements from the following ER diagram about a publisher enterprise. Note that you can use any appropriate data types for your schema design, and no specification of behavior is required. Cataloy Name Tide Cry Pubicaton Produce Pubisher Page count Format Madum Address Duration City Sreet Book Recording Questions 12.2 ts) List two popular heuristic rules used by a heuristic-based query optimizer in a relational DBMS.
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