DBMS Degree Lab Records
PRACTICAL-I ER-DIAGRAM FOR TRAIN SERVICES DRAW ER-DIAGRAM FOR TRAIN SERVICES IN A RAILWAY STATION An Entity can be any object, place, person or class. Entity is represented using rectangles. An “ Entity–Relationship Model’’ ( ER- model ) modelling was developed for database design by “ Peter Chen ” and published in a “1976”. An ER- model describes about the inter-related things of interest in a specific domain of knowledge. An ER model is composed of entity types and specifies relationships that can exist between instances of those entity types. RAILWAY MANAGEMENT SYSTEM :- · Railway management System is the computerized system of reserving the seats of train seats in advanced . · On-line reservation has made t...