DMI01

Provide a Data Migration Approach document which details their approach to a Data Migration when acting both as Source and Target Solution Supplier

Note: This is a high level, generic document to be provided to NHS Digital as part of Standards Compliance and then to be tailored according to the needs of each Data Migration undertaken

DMI02

Provide a Documented Data Extract (DDE) that allows a Target Solution Supplier to understand and interpret the form and structure of the extracted data. This will include, but is not limited to:

1. A description of the physical data included in the extract
2. A logical model explaining the relationships between the data in the extract, and any physical primary/compound/foreign key information required to be able to understand and process the extract
3. A mapping between the physical and logical models
4. Details of units of measure for numeric fields where these are not clearly identified in the extract itself
5. Full descriptions of the meaning of any coded values included in the extract
6. Details of any business rules/logic that the Target Solution Supplier would have to understand to successfully import the extract
7. Details of any exceptional or specific handling required for the Target Solution Supplier to successfully import the extract, e.g. where handling of certain data has to be treated differently if it was created between certain dates
8. Rules for any data which the Source Solution derives from the extracted data but which is not included
9. Any excluded data
10. Any checks or validations (e.g. integrity checks) which the Target Solution Supplier needs to undertake to ensure the accuracy of the imported data
11. Any documentation which would be required to support Solution reconstitution
12. The format of the data extract to be provided

Note: This is an overarching DDE to be provided to NHS Digital as part of Standards Compliance and then tailored according to the specifics of each Data Migration undertaken

DMI03

Provide the DDE to NHS Digital:

• at the request of NHS Digital (e.g. for Standards Compliance) or in the case of significant changes to the DDE

DMI04

DMI27

Perform a migration of data from a source supplier to target supplier over the internet.

• Internet-based transfers must conform to the Cross Function Requirements outlined within the DMS Data Transfer - Cross Functional Requirements Document 
• If, under the circumstance that a bandwidth of >= 70 Mbps and a latency of <200ms cannot be achieved, then a fall back to physical media transfer can be used.
• If, under the circumstance that physical media is deemed necessary, and the target supplier is primarily cloud-based, then a solution supported by the target supplier’s cloud provider must be used, for example AWS Snow Cone or Azure Data Box.
• If, under the circumstance that both Suppliers are primarily cloud-based, then an internet-based transfer must be used. This is due to the potential number of additional transfers steps when using physical media between two alternative cloud providers.

DMI05

Support the Service Recipient with improving the data quality in the Source Solution up to the minimum standard agreed by all parties in preparation for the data extracts  

See documents available here for guidance regarding data cleansing and preparation of data for a migration

DMI06

Provide a minimum of two separate data extracts to the Target Solution Supplier and/or the Service Recipient to include:

• an initial sample data extract
• a final data extract for data loading

NB. The provision of additional extracts may be required to facilitate the data transformation and data migration activities as detailed in the Data Migration Process set out in the Catalogue Solution Migration Process Ancillary Document

DMI07

All data extracts will:

• be in an encrypted electronic format
• be in conformance with the DDE provided
• be provided to the Target Solution Supplier and/or the Service Recipient as instructed by the Service Recipient (as Data Controller)
• employ cryptographic techniques which conform to NIST Cryptogrophy Standards
• contain the full set of Patient records, including documents and attached images as well as other clinical and administrative information such as tasks and appointments where applicable to the individual migration event
• be in a human readable format without any undue degradation (i.e. flattening from structured data to plain text) or the need for access to the legacy Solution to be available

DMI26

All data extracts to contain the full set of audit trails where applicable to the individual migration event.

DMI08

DMI09

Provide access to the Source Solution, including data and audit trails in human readable format, and support services for the duration of the agreed Run-Off period as a minimum, according to the terms of the applicable contracts and agreements for that Data Migration and/or at the request of the Service Recipient.

Note: Reference access to the Source Solution may be required for some time after completion of the Data Migration activities 

DMI10

DMI11

DMI12

DMI13

DMI14

DMI15

Facilitate as many iterations of the data transformation and mapping as required to address all errors, omissions, and irregularities to the satisfaction of the Service Recipient

Note: If greater than five iterations of the data extract and transformation process are required, this will need to be reported to NHS Digital

DMI16

DMI17

DMI18

DMI19

DMI20

Provide comprehensive aggregated reports to enable the Service Recipient to verify the integrity, accuracy and completeness of the transformed data. As a minimum these will include:

• counts of all coded data items from both Source and Target Solutions
• comparisons of data in the Source Solution with data in the Target Solution (e.g. number of current Active Patients, active medications, results of routine QOF searches)
• any variances

DMI21

DMI22

DMI23

DMI24

DMI25