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Entity Relationship Diagram for a Steel Plant
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ENTITY RELATIONSHIP DIAGRAMSTEEL MAKING PROCESS
Presented By:
Gaurav Gupta - 33
Gitesh Agarwal - 35
Steel Making Process
Raw Materials : Iron Ore, Coal, Limestone, Manganese Ore
Major Processes:
Coke Oven : Coal Coke
Blast Furnace : Raw Materials Hot Metal
LD Converter : Hot Metal Crude Steel
Secondary Refining : Crude Steel Finished Steel
Casting : Liquid Steel Slabs, Plates, Ingots
Rolling Mills : Slabs Coils, Structural etc.
Lime stone Iron ore
Coal
SINTER PLANT
HR CF
PIG CASTING M/C PIG IRON
HOT STRIP MILL
CC Slabs
BOF
HR plates/Sheet
HR Coils for sale
PICKLING LINES
ANNEALING LINES
GALVANALISING LINESGPGC
CR COILS/SHEET
COKE OVENSBLAST FURNACE
CRM
INGOT
Rolled Slab
SLABBING MILL
TMBP COILS
Entities and their attributes
Vendor
vendor IN(PK)
vendor Name
vendor Addr.
vendor Class
supplies
rate
/amount
Entities and their attributes
Iron Ore
lot Number (PK)
vendor Details
date
quantity
composition
Limestone
lot Number (PK)
vendor Details
date
quantity
composition
Coal
lot Number (PK)
vendor Details
date
quantity
composition
Raw Materials
Entities and their attributes
Finished Steel
heat Number (PK)
composition
weight
grade
Entities and their attributes
Bars
lot No (PK)
heat Number
grade
weight
dimensions
Coils
lot No (PK)
heat Number
grade
weight
dimensions
coating Details
Slabs
lot No (PK)
heat Number
no Of Slabs
weight
dimensions
grade
Products
Entities and their attributes
Customer
Customer IN(PK)
customer Name
customer Addr.
customer Status
quantity Ordered
price
/amount
Relationship between Entities
“ A vendor can supply many raw materials”
“ A raw material can be supplied by many vendors”
“ Raw material of different lot number can produce finished
steel of single heat number”
“ A single finished steel can be casted into many slabs/ bars/
coils”
“ A single slab/ bar/ coil can be casted only from one single
finished steel”
“ A single customer can purchase many slabs/ bars/ coils”
“ A single slab/ coil/ bar can be purchased by only one
customer”
Entity Relationship Diagram
Vendor Supplies
Coal
Iron Ore
Limestone
1..*
1..*
1..*
1..*
Entity Relationship Diagram
Coal
Iron Ore
Limestone Produces Finished Steel
1..*
1..*
1..*
1..1
Entity Relationship Diagram
Finished Steel produces
Slab
Coils
Bars
0..*
1..1
0..*
0..*
Entity Relationship Diagram
Slabs
Coils
BarsShipped
toCustomer
0..*
0..*
0..*
1..1
Final Entity Relationship Diagram
Vendor
Vendor IN (PK)
suppliesRaw Material
lot Number (PK)
Finished Steel
Heat Number (PK)
produces
Products
Lot number (PK)
produces
Customers
Customer IN (PK)
shipped
1..*1..*
1..*
1..1
1..1
0..*0..*
1..1
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