data warehousing fundamentals a comprehensive guide for it professionals phần 4 ppsx
Windows Vista for IT Professionals phần 4 pps
... performs three tasks to detect phishing sites:
ã The Web site addresses you visit are compared to a list of known legitimate Web
sites to ensure legitimate sites are not blocked.
ã The Web sites ... NAP enforcement. For
example, DHCP enforcement requires a DHCP NAP EC. The required ECs are part of
Windows Vista and may also be released for Windows XP SP2.
IPsec Enforcement
IPs...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 1 ppt
... Data updates are commonplace in
an operational database; not so in a data warehouse. The data in a data warehouse is not as
volatile as the data in an operational database is. The data in a data ... End-Users 17 7
1 Why Metadata is Essential for IT 17 9
1 Automation of Warehousing Tasks 18 1
1 Establishing the Context of Information 18 3
1 Metadata Types...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 2 ppt
... 3-8 Integration of KM and data warehouse.
Types of Metadata
Metadata in a data warehouse fall into three major categories:
ț Operational Metadata
ț Extraction and Transformation Metadata
ț End-User ... metadata contain all of
this information about the operational data sources.
Extraction and Transformation Metadata. Extraction and transformation metada-
ta contain data about the...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 3 potx
... Chapter 2:
ț Source data
Production data
Internal data
Archived data
External data
ț Data staging
Data extraction
Data transformation
Data loading
ț Data storage
ț Information delivery
ț Metadata
ț ... internal and external data sources form the source data
architectural component. Source data governs the extraction of data for preparation and
storage in the dat...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 5 docx
... source operational systems, data extraction tools, data
transformation tools, the data dictionary definitions, and other sources all contribute to
the data warehouse metadata. Metadata management, ... navigate through the data ware-
house and any data marts.
From the outset, pay special attention to metadata for your data warehouse environ-
ment. Prepare a metadata initiativ...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 6 potx
... Data
123 AAAAA
234 BBBBB
345 CCCCC
DATA
STAGING
Key Data
123 AAAAA
234 BBBBB
345 CCCCC
DATA
STAGING
Key Data
123 AAAAA
234 BBBBB
345 CCCCC
DATA
STAGING
Key Data
123 AAAAA
234 BBBBB
345 CCCCC
DATA
STAGING
B
EF
O
R
AF
TE
R
Key ... extracted data is raw data and it cannot be applied to the
data warehouse. First, all the extracted data must be made usable in the data w...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 7 ppt
... poten-
tial effect of bad data. The low-priority data may be cleansed if you have any time and re-
DATA QUALITY INITIATIVE
309
DATA
QUALITY
INITIATIVES
DATA
CONSUMER
(User Dept.)
DATA
EXPERT
(User ... companies serious about data quality pull all these factors together and establish a
data quality framework. Essentially, the framework provides a basis for launching data...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 8 potx
... data security a major concern for a Web-enabled data warehouse?
8. List any four features of the data Webhouse.
9. Name any two approaches for an OLAP system to function in a Web-enabled data
warehouse.
10. ... organizations gather enterprise data from the source operational systems,
move the data through a transformation and cleansing process, and store the data in...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 9 pdf
... just a couple of ex-
amples. Review all the initialization parameters and set each appropriately.
Data Arrays
What are data arrays? Suppose in a financial data mart you need to keep monthly balances
of ... suitable for low-selectivity data? Why?
9. What is data partitioning? Give two reasons why data partitioning is helpful in a
data warehousing environment.
10. What i...
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 10 pot
... start with a large volume of data,
even a small percentage increase can result in substantial additional data.
In the first place, a data warehouse may contain too much historical data. Data ... huge amounts of data that has taken years to gather and accu-
mulate. The historical data may go back 10 or even up to 20 years. Before the data arrives
at the data warehouse,...
data warehousing fundamentals a comprehensive guide for it professionals phần 4 ppsx
... summary list of processes in which metadata is significant for IT:
ț Data extraction from sources
ț Data transformation
ț Data scrubbing
ț Data aggregation and summarization
ț Data staging
ț Data ... the classification of metadata types by the functional areas in the
data warehouse:
1. Data acquisition
2. Data storage
3. Information delivery
Data Acquisition
In this ar...
data warehousing fundamentals a comprehensive guide for it professionals phần 5 pptx
... warehouse data models, source-staging area mappings, staging area-
warehouse mappings, data extraction rules, data transformation rules, data cleansing
rules, data aggregation rules, data loading and ... METADATA
197
METADATA REPOSITORY
Information Navigator
Technical Metadata
Business Metadata
Source systems data models, structures of external data sources, staging area file...
A Practical Guide for Health Researchers - part 4 ppsx
... monitoring: data management (record keeping and
data handling) and data quality (quality assurance and quality control).
Record-keeping and handling of data
All steps involved in data management should ... several confused volumes of information into tables and
This is trial version
www.adultpdf.com
88 A practical guide for health researchers
succinct paragraphs. He was able to...
Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 3 ppsx
... Alkalinity
Background
Acidity
Alkalinity
Importance of Alkalinity
Criteria and Standards for Alkalinity
Calculating Alkalinity
Calculating Changes in Alkalinity, Carbonate, and pH
3. 6 Hardness
Background
Calculating ... concentration of CaCO
3
.
Example 3. 3
A groundwater sample contains 30 0 mg/L of bicarbonate at pH = 10.0. Calculate the carbonate
alkalinity as CaCO
3
....
Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 5 ppsx
... Gravity pulls water downward.
2. Water pressure in the aquifer acts upward against gravity.
3. Capillary forces at the interface between the saturated and unsaturated zones also act
upward against ... 3-ring aromatic hydrocarbons. Using calibration standards for the water-soluble fractions
improves the accuracy of identifying water sample contaminants.
L1 354 /ch 05/ Frame Page 133 Tuesda...
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