1Z0-997-26 Databases Practice Question
An architect is designing an Oracle Autonomous JSON Database instance to store flexible document workloads. Which feature is automatically enabled on Autonomous JSON Database that distinguishes it from general-purpose Autonomous Transaction Processing instances regarding storage management?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Storage and indexing are specifically optimized for JSON collections with restrictions on non-JSON relational tables
Autonomous JSON Database provides optimized storage and indexing specifically for JSON collections, allowing schema-less storage while maintaining relational capabilities, but restricts the creation of non-JSON relational tables.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Automatic conversion of all JSON documents into relational third-normal-form tables upon ingestion
Why it's wrong here
Incorrect. JSON documents are stored natively in OSON format without forcing relational normalization.
- ✗
Mandatory requirement to define fixed database schemas via JSON Schema validators before inserting data
Why it's wrong here
Incorrect. Schema-less design is a core tenet of Autonomous JSON Database.
- ✓
Storage and indexing are specifically optimized for JSON collections with restrictions on non-JSON relational tables
Why this is correct
Correct. Autonomous JSON Database is optimized exclusively for JSON data models, offering lower cost per terabyte for document stores with specific usage boundaries.
- ✗
Exclusion of automated backups to reduce operational overhead
Why it's wrong here
Incorrect. Automated backups are fully enabled and mandatory on all Autonomous Database variants.
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Last reviewed August 2026 · checked against the official Oracle exam blueprint
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