Final answer:
Cloud Datastore and Cloud Bigtable are alike in that they are both highly scalable and are both NoSQL databases, tailored for handling large sets of unstructured data.
Step-by-step explanation:
Cloud Datastore and Cloud Bigtable are alike in several ways. The correct options are:
- A) They are both highly scalable: Both services are designed to handle large amounts of data and traffic, scaling seamlessly to meet the demands of applications.
- D) They are both NoSQL databases: Neither Cloud Datastore nor Cloud Bigtable use SQL as their query language, they are both part of the NoSQL database family which is designed to store and manage large sets of unstructured data.
While Cloud Datastore offers some SQL-like queries through the GQL language, it is not standard SQL. Additionally, Cloud Bigtable does not have free daily quotas, which means option B is incorrect. Cloud Bigtable is more focused on providing low-latency access to large datasets and does not offer SQL-like queries, making option C incorrect as well.