Tài liệu Managing Files in a Printer Queue doc
Tài liệu Managing Files in a Printer Queue doc
... be able to:
• Open up the printer queue
• Add jobs to the printer queue
• Delete a job from the printer queue
• Rearrange jobs in the printer queue
• Purge all jobs held in the printer queue ... without sending any information to the printer. Minimize
the printer queue window.
Step 3
To add jobs to the printer queue, create some documents to print. Cl...
Tài liệu Managing time in relational databases- P3 doc
... maintain temporal data must be as easy to write as
are transactions to maintain current data. Queries to retrieve
temporal data, or a combination of temporal and current data,
must be as easy ... Managing
Temporal Data
In terms of granularity, temporal data can be managed at
the level of databases, or tables within databases, or rows within
tables, or even columns within rows. And at ea...
Tài liệu Using Indexers in a Windows Application doc
... PhoneBook
class: one that accepts a Name parameter and returns a PhoneNumber, and another that
accepts a PhoneNumber parameter and returns a Name. (The Name and PhoneNumber
structs have already been ... and
examine the PhoneBook class.
This class contains two private arrays: an array of Name values called names, and
an array of PhoneNumber values called phoneNumbers. The PhoneBo...
Tài liệu Protecting games in a mobile world docx
... C/C++/Assembly as
programming language. Code is compiled to a
special byte code that runs on a special virtual
machine that is adapted to all the handset
models that are supported.
2
For a game to ... then target a much smaller audience. It
is also not that easy for people to share games
with each other because chances are that people
who want to share have different phone
m...
Tài liệu Managing time in relational databases- P10 docx
... standard temporal model
166 Part 3 DESIGNING, MAINTAINING AND QUERYING ASSERTED VERSION DATABASES
8
DESIGNING AND GENERATING
ASSERTED VERSIONING
DATABASES
CONTENTS
Translating a Non-Temporal ... Physical Data Model 180
Generating an Asserted Versioning Database from a Physical Data
Model
and Metadata 181
Tem
poralizing the Physical Data Model 182
Generating Temporal Entity and Temporal .....
Tài liệu Managing time in relational databases- P11 doc
... work involved in maintaining
temporal data, and will eliminate the errors that would otherwise
inevitably happen as temporal data is maintained.
Using a framework like the AVF, temporal transactions ... will make abundantly clear, that is a daunting task.
Redundancies in the Asserted Versioning
Bi-Temporal Schema
An Asserted Versioning database is a physical impl ementa-
tion of a...
Tài liệu Managing time in relational databases- P17 doc
... perhaps
in a batch transaction table within the database.
Far future deferred assertions are the internalization of data
located in what are often called staging areas. They are collections
of data ... into our databases
and later have to be backed out. The platform costs of storing,
transforming, and moving data into and out of pipeline data-
sets are controlled by minimizing redundanc...
Tài liệu Managing time in relational databases- P18 doc
... to the
data in a conventional table). Completeness of coverage was
guaranteed, however, because those nine categories are a math-
ematical partitioning of all possible combinations of past, pres-
ent ... between a time period
and a point in time, and between two points in time. Once again,
completeness of coverage has been guaranteed because of the
use of a mathematical partit...
Tài liệu Managing time in relational databases- P20 doc
... data, and also temporal upward
compatibility for logical data models and conventional databases.
Maintenance Encapsulation
Maintenance encapsulation protects both the user of the
database, and the ... to
get that data ready for querying. There is no delay between the
business request for data, and its availability in queryable form.
The majority of queries against bi-temporal data are point...
Tài liệu Managing time in relational databases- P21 doc
... bi-temporal data manage-
ment, Asserted Versioning is a way to begin migrating databases
and applications right away, using the DBMSs available today
and the SQL available today. As a destination, Asserted
Versioning ... version tables, transac-
tion datasets, staging areas and logfile data from databases.
In their place, Asserted Versioning provides a standard canonical
form for bi-t...