Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 5 potx
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 5 potx
... be handled in the data marts rather
than the data warehouse. The first two approaches, database and query tool
localization, rely on functionality of those software components to handle data
presentation. ... patterns and rates,
and a common standard time to analyze network traffic.
If there is a requirement for a common standard time, you must store the local
time and date as...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 7 potx
... arrange data and indexes within the data-
base and their applicability to the data warehouse environment. Next, we
examine processing techniques to improve load and publication performance.
Data ... everything in this
Data Warehouse Optimization
299
environment, and the only way to ensure proper checks is to handle them at
the database level. A data warehouse, on th...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 1 pptx
... 355
Roles and Responsibilities 355
Subject Area Model 355
Business Data Model 356
System and Technology Data Model 356
Collision Management 357
Model Access 357
Modifications 357
Comparison 358
Incorporation ... from a Recognized Standard 149
Surrogate Key 149
Dimensional Data Mart Implications 151
Differences in a Dimensional Model 152
Maintaining Dimensional Confo...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 2 pdf
... apply the business data model include operational
systems, data warehouse, and data mart databases, and the model provides
the meta data (or information about the data) for these databases to help ... case of a data warehouse, these inter-
faces include the data acquisition and the data delivery programs, where
and when to perform data cleansing, audits, data main...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 3 ppsx
... Table
(Data to be
loaded into
the DW)
Data
Warehouse
SOURCE SYSTEM ENVIRONMENT
Cleansing,
Selection, Change
Data Capture
Archive Data
Load data into
data warehouse
Archived
(Complete)
Source
Data
Extraction
(Extract ... added to the data warehouse) and usage (to reduce the need to join data
to satisfy queries. These steps help organize the data to meet performance
o...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 4 pot
... the data warehouse is to store historical data from dis-
parate systems, the data warehouse data model needs to consider the defini-
tions in the source systems, and we will address the data warehouse ... of the data warehouse and the data marts.
Data acquisition performance. The level of granularity may (or may not)
significantly impact the data acquisition perf...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 6 pps
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Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 8 pptx
... system
model and require changes to the processes that load and deliver data in the
data warehouse. Because of the side effects of such changes, these techniques
are best applied during initial database ... models. A technology model exists for the
data warehouse and for each of the data marts. When there is a change to a
data mart, changes in the data warehouse model...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 9 pdf
... Line
Staging Data Store
Data
Warehouse
Data Mart
Data Mart
Data Mart
• Users Access
Transactions
Data Warehouse
Bus
Aggregated
Data Mart
Personal
Data Mart
Aggregated
Data Mart
Atomic
Data Mart
Atomic
Data ... the data in the chosen mart for what data belongs
in the data warehouse data versus the data used in the data mart. Your job
is to separate the...
Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 10 docx
... 118
interfaces, 253
altering, 254
delta interfaces, 254 , 256 – 257
delta snapshot, 257
denormalized form data, 263
flexibility, 3 35
reference data, 257
snapshot interfaces, 254 – 255
transaction, 257 , 278
Internal ... 257
changes, 256 – 257
data elements of interest, 251
data presentation, 253 – 258
date of view of, 118
delivering data, 258 – 259
delta interface, 256
dime...
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