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CASSANDRA-296 updated CLI output for README.txt 

git-svn-id: https://svn.apache.org/repos/asf/incubator/cassandra/trunk@802912 13f79535-47bb-0310-9956-ffa450edef68
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Eric Evans 2009-08-10 19:35:07 +00:00
parent 8455ebfe87
commit 6861b013c5
1 changed files with 18 additions and 18 deletions
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36
README.txt
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@ -53,32 +53,32 @@ As the banner says, you can use 'help' or '?' to see what the CLI has to
offer, and 'quit' or 'exit' when you've had enough fun. But lets try
something slightly more interesting...
cassandra> set Table1.Standard1['jsmith']['first'] = 'John'
Statement processed.
cassandra> set Table1.Standard1['jsmith']['last'] = 'Smith'
Statement processed.
cassandra> set Table1.Standard1['jsmith']['age'] = '42'
Statement processed.
cassandra> get Table1.Standard1['jsmith']
COLUMN_TIMESTAMP = 1241129773658; COLUMN_VALUE = 42; COLUMN_KEY = age;
COLUMN_TIMESTAMP = 1241129537336; COLUMN_VALUE = Smith; COLUMN_KEY = last;
COLUMN_TIMESTAMP = 1241129520503; COLUMN_VALUE = John; COLUMN_KEY = first;
Statement processed.
cassandra> set Keyspace1.Standard1['jsmith']['first'] = 'John'
Value inserted.
cassandra> set Keyspace1.Standard1['jsmith']['last'] = 'Smith'
Value inserted.
cassandra> set Keyspace1.Standard1['jsmith']['age'] = '42'
Value inserted.
cassandra> get Keyspace1.Standard1['jsmith']
(column=age, value=42; timestamp=1249930062801)
(column=first, value=John; timestamp=1249930053103)
(column=last, value=Smith; timestamp=1249930058345)
Returned 3 rows.
cassandra>
If your session looks similar to what's above, congrats, your single node
cluster is operational! But what exactly was all of that? Let's break it
down into pieces and see.
set Table1.Standard1['jsmith']['first'] = 'John'
\ \ \ \ \
\ \ \_ key \ \_ value
\ \ \_ column
\_ table \_ column family
set Keyspace1.Standard1['jsmith']['first'] = 'John'
\ \ \ \ \
\ \ \_ key \ \_ value
\ \ \_ column
\_ keyspace \_ column family
Data stored in Cassandra is associated with a column family (Standard1),
which in turn is associated with a table (Table1). In the example above,
we set the value 'John' in the 'first' column for key 'jsmith'.
which in turn is associated with a keyspace (Keyspace1). In the example
above, we set the value 'John' in the 'first' column for key 'jsmith'.
For more information on the Cassandra data model be sure to checkout
http://wiki.apache.org/cassandra/DataModel