Google Cloud Certified Associate Cloud Engineer Practice

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What is the fully managed NoSQL database in Google Cloud with a limited query syntax?

BigQuery
Datastore
Firestore
Spanner

The correct answer is: Datastore

The fully managed NoSQL database in Google Cloud that features a limited query syntax is Datastore. Datastore is designed for application backends and supports a variety of data types, making it suitable for hierarchical data storage using entities and properties. Its query capabilities are more limited compared to other databases, which makes it easier to use for specific scenarios, particularly in web and mobile application development where scalability and performance are critical. Datastore automatically handles sharding and replication across multiple data centers, which enhances data durability and accessibility. This fully managed service abstracts much of the operational complexity often associated with database management, allowing developers to focus more on application development rather than infrastructure concerns. While Firestore is also a NoSQL database and related to Datastore, it offers more advanced features, such as real-time capabilities and richer query options. BigQuery is primarily designed for data analytics and data warehousing rather than NoSQL use cases. Spanner, on the other hand, is a horizontally scalable, relational database service that combines aspects of both relational and NoSQL databases but does not fit the criteria of a limited query syntax as it supports SQL queries. Thus, Datastore stands out as the correct choice within the context of fully managed NoSQL databases with a limited query syntax.