Contrast the following terms:
a. Data dependence; data independence
b. Structured data; unstructured data
c. Data; information
d. Repository; database
e. Entity; enterprise data model
f. Data warehouse; ERP system
g. Personal database: multitier database
h. System development life cycle: prototyping
i. Enterprise data model: conceptual data model
j. Prototyping: agile software development