Practice Test 3 | Google Cloud Certified Professional Cloud Architect | Dumps | Mock Test
Your company wants to track whether someone is present in a meeting room reserved for a scheduled meeting. There are 1000 meeting rooms across 5 offices on 3 continents.
Each room is equipped with a motion sensor that reports its status every second. The data from the motion detector includes only a sensor ID and several different discrete items of information. Analysts will use this data, together with information about account owners and office locations. Which database type should you use?
A. Relational database
B. Blobstore
C. Flat file
D. NoSQL database
Correct Answer D
The 3 characters: 1000 rooms; a sensor that reports its status every second; the data includes only a sensor ID and several different discrete items are a clear indication for a BigTable (a NoSQL database) usage pattern.
Google Cloud Bigtable: A scalable, fully-managed NoSQL wide-column database that is suitable for both real-time access and analytics workloads. https://cloud.google.com/storage-options/
Bigtable is Good for:
· Low-latency read/write access
· High-throughput analytics
· Native time series support
For the following common workload:
- IoT, finance, adtech
- Personalization, recommendations
- Monitoring
- Geospatial datasets
- Graphs
Bigtable single value in each row is indexed; Cloud Bigtable tables are sparse; if a cell does not contain any data, it does not take up any space, which satisfies for storing this type of data: “the data includes only a sensor ID and several different discrete items”
- Reference: Overview of Cloud Bigtable
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