Consider the following ER diagram and answer the following questions. Please only answer the questions (short and simple) to understand. a. List the strong (nonweak) entity types in the ER diagram. b. Is there a weak entity type? If so, give its name, partial key and identifying relationship c. What constraints (in terms of relationships) do the partial key and the identifying relationship of the weak entity type specify in this diagram? d. List the name of all the relationship types, and specify the (min, max) constraint on each participation of an entity type in a relationship type. Justify your choices.RegionName CharName MaxHitPoints Level MaxMana AcctName Password LastPlayed ExpPoints CurrHitPoints 0000 RegionName Climate Precipitation Foliage Created On Туре CurrMana Playersin LastSigned On SbscrbrName Account Has Character Contains Region SbscrbrAddress SbscrbrEMail SbscrbrPhone Carrying AcctCreated On ItemName CreepName IDNum RanInto Item Instantiation IsType Item Modifier Item Type WhenCreated ItemDamage Carrying HitPoints Creep IsType Creep Instantiation n Contains Mana IDNum Attack

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
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Consider the following ER diagram and answer the following
questions. Please only answer the questions (short and simple) to understand.
a. List the strong (nonweak) entity types in the ER diagram.
b. Is there a weak entity type?
If so, give its name, partial key and identifying relationship
c. What constraints (in terms of relationships) do the partial key and the
identifying relationship of the weak entity type specify in this diagram?
d. List the name of all the relationship types, and specify the (min, max) constraint
on each participation of an entity type in a relationship type. Justify your
choices.RegionName
Transcribed Image Text:Consider the following ER diagram and answer the following questions. Please only answer the questions (short and simple) to understand. a. List the strong (nonweak) entity types in the ER diagram. b. Is there a weak entity type? If so, give its name, partial key and identifying relationship c. What constraints (in terms of relationships) do the partial key and the identifying relationship of the weak entity type specify in this diagram? d. List the name of all the relationship types, and specify the (min, max) constraint on each participation of an entity type in a relationship type. Justify your choices.RegionName
CharName
MaxHitPoints
Level
MaxMana
AcctName
Password
LastPlayed
ExpPoints
CurrHitPoints
0000
RegionName
Climate
Precipitation
Foliage
Created On
Туре
CurrMana
Playersin
LastSigned On
SbscrbrName
Account
Has
Character
Contains
Region
SbscrbrAddress
SbscrbrEMail
SbscrbrPhone
Carrying
AcctCreated On
ItemName
CreepName
IDNum
RanInto
Item
Instantiation
IsType
Item
Modifier
Item Type
WhenCreated
ItemDamage
Carrying
HitPoints
Creep
IsType
Creep
Instantiation
n
Contains
Mana
IDNum
Attack
Transcribed Image Text:CharName MaxHitPoints Level MaxMana AcctName Password LastPlayed ExpPoints CurrHitPoints 0000 RegionName Climate Precipitation Foliage Created On Туре CurrMana Playersin LastSigned On SbscrbrName Account Has Character Contains Region SbscrbrAddress SbscrbrEMail SbscrbrPhone Carrying AcctCreated On ItemName CreepName IDNum RanInto Item Instantiation IsType Item Modifier Item Type WhenCreated ItemDamage Carrying HitPoints Creep IsType Creep Instantiation n Contains Mana IDNum Attack
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