U
NIT
10:
B
IG
D
ATA AND
B
USINESS
A
NALYTICS
Pearson BTEC International Level 3 Qualifications in Information Technology –
Specification – Issue 3 – September 2022 © Pearson Education Limited 2022
142
o
system-based factors, including
–
volume: the quantity of data that is generated
–
velocity: the speed of generation of data
–
variety: the mixture of data to
be processed
o
security of data, e.g. password protection, data encryption,
secure processes,
and sufficient maintenance of IT systems
o
data warehouse
–
holds very detailed information on multiple subject
areas
–
works to integrate all data sources together
o
data mart, including
–
often holds only summarised data on one subject area, e.g. finance or sales
–
concentrates on integrating information from a given subject
area or a set of
source systems
–
stand-alone data mart: focuses on one subject area and it is not designed in a
whole organisational context, e.g. manufacturing has their data mart, human
resources theirs and so on
–
conformed data mart: facts and measures are categorised and described in
the same way across multiple data marts, ensuring consistent
reporting across
the business.
•
Accessing data, including:
o
sharing data across an organisation
o
ensuring that the right people have readily available access to
–
data
–
analytical software, e.g. spreadsheet, database, commercial statistical
application, e.g. JMP
®
–
data-management processes.
Dostları ilə paylaş: