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IndiaQ1. Compare EIB, Core Connectors and Workday Studio.
Short answer: EIB = simple, Core Connectors = packaged, Studio = complex custom integrations.
Strong answer: EIB handles simple inbound/outbound integrations via templates and basic transformations. Core Connectors are Workday-delivered, configurable integrations for common domains (payroll, benefits) with Connector transformations. Studio is an Eclipse-based IDE for complex, multi-step custom integrations with rich transformation and orchestration. Choose by complexity and reuse.
Likely follow-up: What can Studio do that an EIB cannot?
What the interviewer is checking: Integration tool selection.
Common mistake: Defaulting to Studio for what an EIB handles, or vice versa.
Q2. How does Workday expose data for integrations?
Short answer: Web services (SOAP/REST) and Report-as-a-Service (RaaS).
Strong answer: Workday exposes public web service APIs (SOAP, plus growing REST) per functional area, and any Advanced report can be exposed as a web service (RaaS) to deliver custom data sets. Integrations consume these with proper ISU/ISSG security. RaaS is a common, flexible way to get exactly the data you need.
Likely follow-up: What is RaaS and when do you use it?
What the interviewer is checking: Data-access knowledge.
Common mistake: Building custom code when a RaaS report would suffice.
Q3. What are ISU and ISSG, and why do they matter?
Short answer: Integration System User and Integration System Security Group secure integrations.
Strong answer: An Integration System User (ISU) is a dedicated account that runs integrations; an Integration System Security Group (ISSG) grants that ISU the specific domain/BP permissions it needs. Using a scoped ISU/ISSG (least privilege, often with password never-expires and restricted to integration) is the secure standard for integrations.
Likely follow-up: Why not run integrations under a normal user account?
What the interviewer is checking: Integration security.
Common mistake: Over-permissioning the ISU or using a personal account.
Q4. How do transformations work in Workday integrations?
Short answer: XSLT/ETV and Studio transformations convert Workday XML to the target format.
Strong answer: Integrations transform Workday’s XML output to the target format using XSLT, Enterprise Transformation (document transformation), or Studio’s components. You map fields, apply logic, and produce the file/format the downstream system expects. Solid XML/XSLT and understanding of Workday’s data structures are key skills.
Likely follow-up: What skill underpins most Workday transformations?
What the interviewer is checking: Technical integration depth.
Common mistake: Weak XML/XSLT knowledge for transformation-heavy work.
Q5. How do you schedule and monitor integrations?
Short answer: Schedule via BP/process scheduler; monitor with integration events and error handling.
Strong answer: Integrations run on schedules (integration schedules/process framework) or on demand. You monitor via the integration event, which shows status, output, and errors, and configure notifications and retry/alerting. Good error handling and reviewing integration events are essential for reliable operations.
Likely follow-up: Where do you look to debug a failed integration run?
What the interviewer is checking: Operational integration knowledge.
Common mistake: No monitoring or error alerting on scheduled integrations.
Q6. How do you secure and handle sensitive data in integrations?
Short answer: Least-privilege ISU, encryption (PGP), and secure transport (SFTP).
Strong answer: Scope the ISU/ISSG to only needed domains, encrypt sensitive output (PGP) and use secure transport (SFTP with keys), and avoid exposing more data than required in the RaaS/report. Audit and rotate credentials. Payroll and PII integrations especially demand encryption and tight access.
Likely follow-up: How would you protect a payroll extract in transit?
What the interviewer is checking: Secure integration practice.
Common mistake: Sending sensitive data unencrypted or over insecure channels.