MedVision ad

what is a schema? (1 Viewer)

neester

Member
Joined
Feb 22, 2003
Messages
30
Location
South Sydney
a ERD is for a offline database, ie. not fields, entities...

a schema is the lil boxes with the lines going from the primary keys, it just visualy displays the relationships between the tables and the fields... im pretty sure an ERD is only for an offline dbase tho..
 

Ultimate

Unknown
Joined
Jul 12, 2002
Messages
1,009
Location
Somewhere
Gender
Male
HSC
2002
If I can remember correctly a schema is the overall plan of the database. An Entity Relationship Diagram (ERD) is a modelling tool used to show this overall plan by showing the relationship between tables.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top