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hadoophivehbase
Rocky
Rocky

Reputation: 309

Why Hbase called as schema less?

I'm newbie to HBase. Actually HBase called schemaless Data store. But to store values in particular column, we should need to specify the table and then column family then column name then the {Actual value}.

So I confused that, To put values into a hbase table why should we need to specify column names at all.

Is HBase is schemaless or not?

Please clarify my doubt? Thanks in advance.

Upvotes: 1

Views: 2666

Answers (1)

Donald Miner
Donald Miner

Reputation: 39943

I've used the term "flexible schema" instead of schemaless, but that's nuance.

What this really means is that the "schema" is stored with the record, not the table. In a RDBMS, the schema is defined and that table has the schema. In HBase (and other BigTable implementations) data is labeled with its types.

An analogy is CSV : RDBMS is to XML : HBase. In CSV, you have an assumption on what a column is. In XML, you specify exactly what it is.

Upvotes: 7

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