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explore data in wide column database using apache^® cassandra^® database c interface

database toolbox™ enables you to connect to an apache cassandra database, which is a wide column database, using the apache cassandra database c interface. after creating a cassandra database connection, you can explore the database structure. import data stored in cassandra database tables into matlab^® from different partitions of the database tables. execute queries using the cassandra query language (cql) and import the results into matlab. also, you can export data from matlab into cassandra database tables.

objects

	apache cassandra database connection
	apache cassandra database connection options

functions

configure cassandra data source

	set apache cassandra database connection options
	test apache cassandra database connection
	reset apache cassandra database connection options to defaults
	save apache cassandra data source

cassandra database connection

	create apache cassandra database connection
	close apache cassandra database connection
	determine if apache cassandra database connection is open

import cassandra database data into matlab

	retrieve column information from apache cassandra database table
	import data from partitions of apache cassandra database table
	list names of database tables in apache cassandra database

export matlab data into cassandra database

insert or update data in apache cassandra database

execute cql query

execute cql query on apache cassandra database

topics

access the structure of a cassandra database and import data from the database with a keyspace, database table, and partition key value using the apache cassandra database c interface.
write a cql query, execute the query on the cassandra database, and import the query results into matlab using the apache cassandra database c interface.
export data from a matlab table into a cassandra database using the apache cassandra database c interface.
view the conversion of data types between cassandra and matlab for data import and export.
convert missing values in a cassandra database column to matlab values when importing data by using the executecql or partitionread function.