SRDH portal currently hosts a copy of demographic data (along with the respective Aadhaar No.) of all beneficiaries who have been allotted Aadhaar Nos.
- Data Loading
Base data comprising Demographic data and Aadhaar No. of beneficiaries is loaded from UIDAI database periodically. This task is performed by the Portal Administrator.
- Portal Admin also collects department data through online or offline data collection interfaces in different data formats like CSV, XML, XLS etc.
There are APIs, Database Scripts which can be used in manual or automatic modes for loading of data, error correction and logging.
Data Cleansing & Purification
Cleansing/Purification and initial De-Duplication of Department databases are essential step before “Seeding” them.
Data cleansing process converts resident demographic data fields as per the e-Governance standards for better matching as well as maintaining consistency and uniformity among data stores. Further data purification/initial de-duplication process utilizes resident demographic data to generate multiple data strings; which should be utilized in searching duplicate resident data.
APSRDH framework incorporates “Data cleansing & purification process”, which cleanses & purifies departmental databases by formatting & identifying duplicates in resident data.
SRDH hosts a set of utilities for linking Aadhaar No. of beneficiary to his/her unique identifier in the beneficiary databases.
These utilities can be used by Department Administrators or Portal Administrator to “Seed” Aadhaar Nos. in the beneficiary databases as well as in SRDH repository. The process of linking Aadhaar no. of the beneficiary with his/her unique identifier in a Government Welfare Scheme database is known as “Seeding”:
- Organic Seeding involves mapping / linking a beneficiary’s Aadhaar No. with his/her unique identifier (such as Ration Card No., Pension Id., MNREGA No., etc.) at the time of availing the benefits. In SRDH portal “Organic Seeding” is accomplished through an online option, which can be used either by the beneficiary or by the nominated department user, who has the necessary access rights.
- Inorganic Seeding is an indirect way of mapping “Aadhaar No.” to a beneficiary identity information from Government departments’ database (Ration card No. / MNREGA No. / Pension ID etc.); where the control string consisting of values of beneficiary’s “Name, Date of Birth, Gender, Father’s Name” in KYR database is compared with similar string constructed out of the respective values in department database.
At the time of UIDAI enrolment only KYR/Demographic data is verified with collaterals submitted. KYR+ data, which includes unique beneficiary identifiers in different Government Welfare Schemes, are collected without adequate verification with respective databases. Hence Aadhaar No. of a
beneficiary cannot be linked reliably with such identifiers collected at the time of enrolment.
“Inorganic Seeding/ Matching” requires Field Verification, since there are various levels of matches of the control string values with the values in the beneficiary database.