DATABASE SYSTEMS (phần 22) pdf
Database Systems Engineer Examination.pdf
...
Q22
When comparing a relational database with an object-oriented database, which of the following
statements correctly describes the object-oriented database?
a) It can express real world ... precision ratio used as
measures in evaluating information retrieval systems, such as document retrieval systems and
data retrieval systems? Here,
A
,
B
and
C
indicate the followin...
Database Systems Engineer Examination.pdf
... Backup/Restore feature
(i) Database backup and restoration can be done for the entire database or for
individual tables.
(ii) “Entire database backup” saves the entire database on backup media. ... the following description of a database, and then answer the Subquestions 1
through 3.
Company M investigated relation schemas as part of its efforts to build a database for
mana...
Database Systems Engineer Examination.pdf
... received
Shipment
Shipment detail
Order detail
Direct shipment
A
B
October, 2005 VITEC
Database Systems Engineer
Examination (Afternoon, Part 2)
1. Examination Time-14:30-16:30 (120 ... system
Sales performance
Masters
Masters,
sales performance,
etc.
Operations
database
Information system
Analytical
database
- 5 -
(Shipment scheduling)
• Order information is...
Tài liệu Database Systems - Part 2 pdf
... Mappings, and Instances (cont.)
COP 4710: Database Systems (Day 3) Page 1 Mark Llewellyn
COP 4710: Database Systems
Spring 2004
Introduction to Database Systems – Part 2
BÀI 2, 1/2 ngày
School ... (cont.)
COP 4710: Database Systems (Day 3) Page 15 Mark Llewellyn
•
The overall description of the database is called the database
schema.
•
There are three different types o...
Tài liệu Database Systems - Part 13 pdf
... view
COP 4710: Database Systems (Day 17) Page 15 Mark Llewellyn
The PRODUCT Table in Access(-)
COP 4710: Database Systems (Day 17) Page 9 Mark Llewellyn
An Example Database
COP 4710: Database Systems ... ‘married’) or a formula (e.g., price-10)
COP 4710: Database Systems (Day 17) Page 19 Mark Llewellyn
The INVOICE Table in Access(-)
COP 4710: Database Systems (Day 17) Pa...
Tài liệu Database Systems - Part 14 pdf
... created in SQL using the CREATE VIEW command.
COP 4710: Database Systems (Day 18) Page 34 Mark Llewellyn
An Example Database( +)
COP 4710: Database Systems (Day 18) Page 24 Mark Llewellyn
Right Outer ... attribute.
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