Create Keyspace & Table
Column : Is a name/value Pair #61Row : Is referenced using Primary Key #61
Table : Similar to Table in RDBMS
Keyspace : Similar to Database in RDBMS
// Create Keyspace cqlsh> create keyspace firstkeyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1}; // Create table create table firstkeyspace. firsttable( subject text, mark text, primary key(subject));
Describe Keyspace & Table
cqlsh:firstkeyspace> describe keyspace firstkeyspace; CREATE KEYSPACE firstkeyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '1'} AND durable_writes = true; CREATE TABLE firstkeyspace.firsttable ( subject text PRIMARY KEY, mark text ) WITH bloom_filter_fp_chance = 0.01 AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'} AND comment = '' AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'} AND compression = {'chunk_length_in_kb': '64', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'} AND crc_check_chance = 1.0 AND dclocal_read_repair_chance = 0.1 AND default_time_to_live = 0 AND gc_grace_seconds = 864000 AND max_index_interval = 2048 AND memtable_flush_period_in_ms = 0 AND min_index_interval = 128 AND read_repair_chance = 0.0 AND speculative_retry = '99PERCENTILE'; cqlsh:firstkeyspace> cqlsh:firstkeyspace> // Describe table cqlsh:firstkeyspace> describe table firstkeyspace. firsttable; CREATE TABLE firstkeyspace.firsttable ( subject text PRIMARY KEY, mark text ) WITH bloom_filter_fp_chance = 0.01 AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'} AND comment = '' AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'} AND compression = {'chunk_length_in_kb': '64', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'} AND crc_check_chance = 1.0 AND dclocal_read_repair_chance = 0.1 AND default_time_to_live = 0 AND gc_grace_seconds = 864000 AND max_index_interval = 2048 AND memtable_flush_period_in_ms = 0 AND min_index_interval = 128 AND read_repair_chance = 0.0 AND speculative_retry = '99PERCENTILE';A Column which has the same value for all the rows in a Table can be made as Static Column #60
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