Because my major is computer programming, database technology is
based requite. Databases technology very useful in the life and my career.
Modification problems: When making changes to the lists, let li
The formal name for a thing that is being tracked is entity, which is defined as something of
importance to the user that needs to be represented in the database.
Example: user, order, a relation
1. Deleted row:
too much data lost
2. Update row: inconsistent data
3. Inserted row: data missing
The study of database technology is important because they are used everywhere.
A modification problem is data corruption or loss that happens when a table uses one row
to store facts about more than one theme. Deleting a row can remove facts ab
Review Questions pages 106-107
2.2) Entity is something of importance to the user that needs to be represented in the database.
An example of an entity is a school.
2.14) To identify a row, to represent the row in foreign keys, to organize storage f