If you sell a house more than once, it is treated as different "property" for each sale. Draw an entity-relationship diagram and write a database design outline. Q2. Law Office: You are trying to automate the records for your uncle's law firm. Multiple attorneys work for the firm, and for each of them you want to store their first name, last name, date hired, hourly billing rate, and date promoted to partner (blank if the attorney is not a partner). Each attorney has multiple cases, which is identified by a unique "docket number". Each case has a name and description, is worked on by only one attorney, and involves a single client. For each client, you want to store a first name, last name, middle name, phone number, address, city, state, and zip code (assume you do not have a zip-code table). Finally, you want to keep track of the billable hours spent on each case. For a single case, this comprises information that looks like Hours Billed Date 2/24/2005 2/26/2005 3/12/2005 Description Prepare brief Client phone call Prepare settlement Client meeting 4.4 0.3 2.0 4/15/2005 0.7 Draw an entity-relationship diagram and write a database design outline.

If you sell a house more than once, it is treated as different "property" for each sale. Draw an entity-relationship diagram and write a database design outline. Q2. Law Office: You are trying to automate the records for your uncle's law firm. Multiple attorneys work for the firm, and for each of them you want to store their first name, last name, date hired, hourly billing rate, and date promoted to partner (blank if the attorney is not a partner). Each attorney has multiple cases, which is identified by a unique "docket number". Each case has a name and description, is worked on by only one attorney, and involves a single client. For each client, you want to store a first name, last name, middle name, phone number, address, city, state, and zip code (assume you do not have a zip-code table). Finally, you want to keep track of the billable hours spent on each case. For a single case, this comprises information that looks like Hours Billed Date 2/24/2005 2/26/2005 3/12/2005 Description Prepare brief Client phone call Prepare settlement Client meeting 4.4 0.3 2.0 4/15/2005 0.7 Draw an entity-relationship diagram and write a database design outline.

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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courses dasses ↑coursel INT courseDateTime DATETIME O room INT coursel INT courseName VARCHAR(45) course Description VARCHAR(45) room are used by a class. For each entity: Entitios rooms Froom DVT L-building VARCHAR(X) capacity VARCHAR(45) Inders The ERD depicts the data needed to track which course and Indicate if the entity is strong, weak ID-dependent, or weak non-ID-dependent For each relationship: • List the cardinality and participation of each entity in the relationship List the business rules for each relationship Indicate if the relationship is identifying or not
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One of the components of a composite primary key might be a candidate key. What would you do if you found out this?
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