database systems using oracle ebook
Database Systems Engineer Examination.pdf
Ngày tải lên :
24/08/2012, 15:44
...
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 following.
A
: The ... is a database in which data additions, changes, and deletions occur at a certain low
frequency. The interval between backups has been increased to twice the current level for
backing the database...
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Database Systems Engineer Examination.pdf
Ngày tải lên :
24/08/2012, 15:44
... 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. ... After the database restored by entire database backup, it can be restored to a
specific time using the acquired update log and roll-forward processing.
(iii) The time required for recovery using ...
Network Development
180 135 9,000 6,750
112
Public Sector Systems
Development
50 26 2,500 1,325
113
Testing
80400 0
114
Distribution Systems
Development
333 149 16,650 7,492
…
…
…
…
…...
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Database Systems Engineer Examination.pdf
Ngày tải lên :
24/08/2012, 15:44
... 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 ...
(1) Entity types are indicated using rectangles.
(2) The entity type name is written inside the rectangle.
(3) The relationship between entity types is indicated using a line.
(4) For a “1-to-1 ... system
Sales performance
Masters
Masters,
sales performance,
etc.
Operations
database
Information system
Analytical
database
- 5 -
(Shipment scheduling)
• Order information is organized into...
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Inclusion of new types in relational database systems
Ngày tải lên :
22/10/2013, 10:15
... "=" and OPR-2 replacing "<". If so, the rela-
tions to be joined using OPR can be sorted using OPR-2 and then merged to produce the required answer.
The last piece of needed ... ACM-TODS,
June 1976.
[BERN81] Bernstein, P. and Goodman, N., "Concurrency Control in Distributed Database
Systems, " ACM Computing Surveys, June 1981.
[BROW81] Brown, M. et. al., "The Cedar ... can simply modify relations to B-tree using any class of
operators defined in the AM relation. The only addition to the modify command is a clause " ;using class"
which specifies what operator...
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Database Design Using Entity-Relationship Diagrams
Ngày tải lên :
22/10/2013, 10:15
... students in database classes and to help
database practitioners in understanding how to arrive at a definite, clear
database design using an entity relationship (ER) diagram. In designing a
database ... Although the Barker /Oracle- like model is quite
popular, it is implementation dependent upon knowledge of relational
databases. The Barker /Oracle model maps directly to a relational database;
there ... Database Systems
, 3rd
ed., Addison-Wesley, Reading, MA, 2000.
Maier, D.
The Theory of Relational Databases
, Computer Science Press,
Rockville, MD, 1983.
Norman, R.J.
Object-Oriented Systems...
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Digital Sound Recorder: A case study on designing embedded systems using the UML notation.
Ngày tải lên :
24/10/2013, 23:15
... design of
an embedded system using the Unified Modelling Language (UML). The
analysed system is a digital sound recorder, or Dictaphone. The design has
been implemented using an embedded processor ... updates the internal
representation of the time, by using the nextSecond method. When the Time object
wraps around, then the date is updated using the nextDay method. The class diagram for
the ... monitoring or data logging tasks.
Forces
•
Embedded real-time systems must complete some tasks within strict deadlines.
Interactive systems do no have these restrictions. They usually are easier...
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Tài liệu Creating a Logical Standby Database by Using Enterprise Manager ppt
Ngày tải lên :
09/12/2013, 16:15
... logical standby database
•
Create a logical standby database by using Enterprise
Manager
Copyright © 2006, Oracle. All rights reserved.
7 - 4
Benefits of Implementing a
Logical Standby Database
•
Provides ... VIEW LOG
Copyright © 2006, Oracle. All rights reserved.
7 - 18
Using the Add Standby Database Wizard
Select “Create a new logical
standby database. ”
Copyright © 2006, Oracle. All rights reserved.
7 ... column in V $DATABASE.
•
Database guard level is set to ALL by broker
automatically on the logical standby database.
•
Database guard level applies to all users except SYS.
Copyright © 2006, Oracle. ...
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