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