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| Section | Objectives |
|---|---|
| Topic 1: Backup, Restore, and Operations | - Monitoring and maintenance - Restore procedures - Backup strategies and tools |
| Topic 2: Sharding and Scalability | - Balancing and scaling operations - Sharded cluster architecture - Shard keys and distribution strategy |
| Topic 3: MongoDB CRUD Operations | - Insert, update, and delete operations - Working with documents and BSON types - Querying and filtering documents |
| Topic 4: Data Modeling | - Schema design principles - Embedding vs referencing - Relationships in MongoDB |
| Topic 5: Aggregation Framework | - Aggregation operators - Data transformation and grouping - Aggregation pipeline stages |
| Topic 6: Replication and High Availability | - Failover and elections - Read/write concerns - Replica set architecture |
| Topic 7: Indexing and Performance Tuning | - Index types and usage - Query performance optimization - Explain plans and diagnostics |
| Topic 8: Security | - Encryption at rest and in transit - Role-based access control (RBAC) - Authentication and authorization |
>> Valid C100DBA Exam Duration <<
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NEW QUESTION # 104
Consider the following document from the products collection:
What does the following query using $elemMatch return? db.products.find( { product_code: "345678" }, { variations: { $elemMatch: { size:
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