plz explain the following er diagram  the problem Individuals volunteer their time to carry out the tasks of the organization. Each volunteer may be assigned to several tasks during the time that they are doing volunteer work, and some tasks require many volunteers. It is possible for a volunteer to be in the system without having been assigned a task yet. It is possible to have tasks that no one has been assigned. When a volunteer is assigned to a task, the system should track the start time and end time of that assignment.The tasks of type “packing” result in the creation of packages. Each individual package of supplies that is produced by the organization is tracked. Each package is assigned an ID number. The date the package was created, and total weight of the package is recorded. A given package is associated with only one task. Some tasks (e.g., “answer the phones”) will not have produced any packages, while other tasks (e.g., “prepare 5000 packages of basic medical supplies”) will be associated with many packages.The packing describes the ideal contents of each package, but it is not always possible to include the ideal number of each item. Therefore, the actual items included in each package should be tracked. A package can contain many different items, and a given item can be used in many different packages.For each item that the organization provides, there is an item ID number, item description, item value, and item quantity on hand stored in the system. Along with tracking the actual items that are placed in each package, the quantity of each item placed in the package must be tracked too.

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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plz explain the following er diagram 

the problem

Individuals volunteer their time to carry out the tasks of the organization. Each volunteer may be assigned to several tasks during the time that they are doing volunteer work, and some tasks require many volunteers. It is possible for a volunteer to be in the system without having been assigned a task yet. It is possible to have tasks that no one has been assigned. When a volunteer is assigned to a task, the system should track the start time and end time of that assignment.The tasks of type “packing” result in the creation of packages. Each individual package of supplies that is produced by the organization is tracked. Each package is assigned an ID number. The date the package was created, and total weight of the package is recorded. A given package is associated with only one task. Some tasks (e.g., “answer the phones”) will not have produced any packages, while other tasks (e.g., “prepare 5000 packages of basic medical supplies”) will be associated with many packages.The packing describes the ideal contents of each package, but it is not always possible to include the ideal number of each item. Therefore, the actual items included in each package should be tracked. A package can contain many different items, and a given item can be used in many different packages.For each item that the organization provides, there is an item ID number, item description, item value, and item quantity on hand stored in the system. Along with tracking the actual items that are placed in each package, the quantity of each item placed in the package must be tracked too.

Volunteer
Volunteer_Task
Task
PK Volunt_ID
ÞK,FK Volunt_ID
PK Task_ID
Volunt_LName
ÞK,FK Task_ID
Task_Name
Volunt_FName
Task_StartTime
Volunt_DOB
Task_EndTime
Volunt_Gender
TaskType_ID
TaskType
Volunt_Descr
PK TaskType_ID
TaskType_Name
Item
TaskPackage
PK Item_ID
PK,FK Task_ID
Item_Descr
ÞK,FK Pack_ID
Item_Value
Item_QOH
Item_Package
Package
PK,FK Item_ID
+
PK Pack_ID
ÞK,FK Pack_ID
Pack_DateCreated
Item_Pack_QIP
Pack_TotalWeight
Transcribed Image Text:Volunteer Volunteer_Task Task PK Volunt_ID ÞK,FK Volunt_ID PK Task_ID Volunt_LName ÞK,FK Task_ID Task_Name Volunt_FName Task_StartTime Volunt_DOB Task_EndTime Volunt_Gender TaskType_ID TaskType Volunt_Descr PK TaskType_ID TaskType_Name Item TaskPackage PK Item_ID PK,FK Task_ID Item_Descr ÞK,FK Pack_ID Item_Value Item_QOH Item_Package Package PK,FK Item_ID + PK Pack_ID ÞK,FK Pack_ID Pack_DateCreated Item_Pack_QIP Pack_TotalWeight
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