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| Description |
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| THE DEFENCE DATA ENVIRONMENT (DDE)
GENERAL
- The DDE is the implementation
of the concept that all systems within the MOD
that need information must be able to share
information. The scope of the DDE is such that it
enables Data Administration for the MOD and
provides Data Management for the MOD at large.
The following are the components that must be in
place to enable this environment. It is important
to recognise that, although described separately,
each of the components is required to achieve the
concept of the DDE.
COMMON DATA DEFINITIONS
- The lessons learnt from the
monolithic, bottom-up approach used within DMIP
(Data Management Implementation Project - now
closed) of collecting and attempting to collate
current data from multiple legacy systems and
COTS packages indicate that any future approach
should be incremental and pragmatic and should
initially address the basic building blocks which
are independent of business views and then build
on this over time.[Definitions and Interfaces]
DATA INTERFACES
- Although a single MOD data
model may be the ultimate goal for MOD DM, the
practicalities and the differing interoperability
requirements of each Functional Area (FA) (A
Functional Area is a defined business area within
MOD, such as Logistics, Intelligence, Personnel
etc) and between FAs demand that more than one
interface standard is required along with the
mechanisms needed to exchange that data. As an
example, the Defence Logistics Organisation (DLO)
needs to use DEF STAN 00-60 (a Defence Standard)
today (and in the future Product Life Cycle
System (PLCS)) to interface with industry and
with Defence Procurement Agency. The mechanisms
for physically moving the data also need to be
addressed. The analysis of which type of
replication mechanism is optimal for which data
in which environment is complex. It is likely
that there will be more than one type of
replication mechanism to allow for the different
scenarios.[Definitions and
Interfaces]
COMMON ENCYCLOPAEDIC DATA
- There is a requirement for all
users to refer to the same set of encyclopaedic
data to ensure consistency of information. The
current situation is that many users are
collecting the same encyclopaedic data from many
different sources. This is inefficient and
produces inconsistent information. There are only two formal organisations that has been formed to
date to specifically source this data. These are:
the Fleet Information Management Unit (FIMU) and Army Data Services.
TOOLS
- Currently MOD procures tools
from the very simple to the extremely complex
both off-the-shelf and bespoke. To reduce overall
MOD costs and to maximise the re-use of tools,
there is a requirement to provide guidance to all
areas of MOD who have some responsibility for DM
on the choice of specific tool sets required for
their particular activity.[Annex A to DM10]
DM IMPACT ON PROJECTS
- Effective DM, which is one
enabler for interoperability, will only be
achieved by ensuring that individual projects
comply with the underpinning DM standards and
policies. Projects, therefore, need to take these
requirements into account from the outset. The
mechanisms required will result in the need to
tailor the various project methodologies that are
used. There are two issues that arise here.
Firstly and fundamentally, constraining projects,
even to a minimalist set of standards for the
good of MOD as a whole, will mean that risk will
need to be accepted by the MOD. Such an approach
is contrary to the existing procurement policy
and ethos. Procurement policy (through the Smart
Acquisition Process) needs to recognise an MOD
risk in providing corporate data. Secondly,
policing of policies at project level is
necessary to ensure adherence to DM standards and
policies.[DM Handbook]
TRAINING/EDUCATION
- DM is an essential enabler for
interoperability. It needs management recognition
and commitment including adequate resourcing.
Such commitment will only be achieved if the
impact of DM is understood. This requires
training and education at all levels across MOD.
The manpower resources required must be
adequately trained for the tasks for which they
are responsible.[Education Strategy]
INTERNATIONAL DIMENSION
- The drivers for
interoperability within and between the various
business areas are different and are, in any
case, continually evolving. In particular there
are some areas where the requirements for
interoperation with other UK Government
departments or international partners may be
equal to or greater than that for national
military interoperability. It would be naïve to
believe that all national data standards could be
used internationally or vice versa.. The DDE
allows for these differently prioritised views of
interoperability. MOD should recognise the
different drivers and attempt to minimise
conflicting requirements. The associated
management structure must also ensure it has
adequate liaison with the international
environment and other government departments in
order to minimise the differences in data
standards between the internal and external
requirements for MOD.[Definitions and Interfaces]
POLICIES AND PROCEDURES
- For the DDE to work there is a
need for a minimalist set of policies, procedures
and standards for DM to be put in place which are
both applicable and adhered to across the MOD.
These need to be accepted and conflicts in
policy, such as the passing of risk to the
contractor and the "COTS versus DM"
dilemma, need to be reconciled. The set of
policies and procedures, which must be applicable
across the whole of MOD, should cover such topics
as: data definition staffing procedures
(including technical format), configuration
management, procedures for the resolution of
contention on data definitions and a guide for
data definition owners. The output is a series of
policy documents within Joint Service Publication
(JSP) 329. (These will be referenced from the
JSP600 series as Regulatory Instruments).[Policies]
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| Current as at 3 December, 2002 |
Last updated on 31 October, 2001 |
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