Database Reference
In-Depth Information
Summary
In this chapter, you're off to a running start with your MyStatus application, having created
our first table, inserted data into it, and learned a few ways to retrieve that data. We've de-
veloped a model for how Cassandra tables are structured, and taken a deep dive into Cas-
sandra's type system.
We now have experience with the
INSERT
and
SELECT
statements, two of the core opera-
tions in CQL. You've learned that primary keys, at least the ones we've seen so far, determ-
ine the order in which rows are returned, but that ordering is opaque to an application. We
can only rely on it being consistent. We've seen some of the limitations of simple tables in
Cassandra, and we know that the types of multi-row retrieval we know so far aren't the
most efficient.
lets us overcome many of the limitations we encountered here.
