• พัสดุ

  • ใช้แล้วหมดไป

  • ใช้แล้วไม่หมดไป

• คนยืม

  • พนักงาน

  • องค์กร

  • บุคคลภายนอก

Relationship

• คนยืมยืมพัสดุ

• พนักงานเบิกพัสดุ

Attribute

• พัสดุ

  • itemID

  • itemName

  • itemAmount

  • itemType

  • itemDepartment

• คนยืม

  • borrowerName

  • borrowerID

  • borrowerType

    • Employee

      • empID

      • empBirthDay

      • empAddress

      • empTel

      • empMail

      • emp

    • Organization

      • orgIndex

    • External

      
      

      
      

เดะมานึกต่อ

1. Employee

   • EName (FName, LName)

   • EID [PK]

   • Address (City, State, ZipCode)

   • ETelNo

   • Email

   • EBirthdate

   • SSN

   • EPosition

   • ESalary

   • ESex

   • EmployeeType (full-time, part-time, Inturn)

2. Item

   • IID [PK]

   • IName

   • IPrice

   • PurchaseDate

   • ILocation (มาจาก department ไหน)

   • LastMaintenanceDate

   • WarrantyExpirationDate

3. Department

   • DNo [PK]

   • DName

   • DLocation

Relationships

1. Borrow(Relationship between Employee and Item)

   • BorrowDate

   • ReturnDate

   • Status(Pending, Returned)

     • Employee can borrow more than 1 item.

     • Item is borrowed by only 1 employee.

2. Is_In (Relationship between Employee and Department)

   • Employee belong to only 1 department.

   • Department have more than 1 employee.

3. Have (Department have items)

   • Department can have more than 1 items.

   • Item belong to only 1 department.

     
     

-PID

-Price

-Name

-Amount

-Department

]

User[

-UID

-Name

-Address

-TelNo

]

Employee[

-EID

-EName

-Address

-TellNO.

-Department

]

Relationship[

User borrow Product

-borrowDate

-returnDate

-penalty

Employee manage Product

]

Employee can add/remove Product from the same Department to the database

Employee can change the Amount of Product from the same Department in the database

Employee from other Department can borrow other Department

User/Employee can borrow more than 1 Product

Product belong to only 1 department

Product that already been borrowed can't be borrow until the Product is return

Device

• deID [PK]

• Name

• Type

• NumOfDevice

• PurchaseDate

• PurchasePrice        

• Status

User ภายใน

• inID [PK]

• Fname

• Lname

• Phone

• Email

User ภายนอก

• outID [PK]

• Fname

• Lname

• Phone

• Email

Department

• dNo [PK]

• dname

Relationship :

1. User borrow Device

• bStartDate

• bEndDate

• bQuantity

2. User add Device

• aDate

• aQuantity

3. User within Department

--------------------------------------------

-ItemID

-Name

-Type

-PurchaseDate

-Amount

-Price

-Department

-NumberOfUsage

User

-Name

-LastName

-Type

-Internal

-InternalUserID

-Department

-PhoneNumber

-External

-IdentificationID

-Address

-PhoneNumber

Department

-Name

-InternalUserAmount

-Item

Relationships

[User borrow Item]

-BorrowDate

-Amount

-DueDate

-HaveReturn(True,False)

[User re-stock Item]

(Only InternalUser can re-stock Item)

-Item

-Amount

-Price

-Department

-Re-stockDate

[User in Department]

(Only InternalUser can be in Department)

-InternalUser can be in only one Department

-Department can have many InternalUser

[Item in Department]

-Item can be in many Department

-Department can have many Item