What happens when you try to load data into Synapse? Do you think any prerequisites are needed? What are those prerequisites?
💡 Model Answer
When you load data into Synapse, the service first validates the source location, schema, and permissions. If the load succeeds, the data is staged in the dedicated SQL pool or serverless pool, making it immediately queryable. Common prerequisites include: 1) A reachable data source (Azure Blob, ADLS, SQL Server, etc.) with network connectivity and firewall rules allowing Synapse to access it; 2) Proper authentication (managed identity, service principal, or SAS token); 3) Correct file format and schema mapping; 4) Sufficient storage and compute resources in the Synapse workspace; and 5) Appropriate permissions on the target tables or external tables. Without these, the load will fail with errors such as "Access denied" or "Invalid file format."
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