Arenadata QuickMarts
Arenadata QuickMarts (ADQM) is a cluster column-oriented DBMS built on ClickHouse. ADQM generates various online analytical reports based on vast amounts of information stored in flat marts. ADQM is much faster than traditional DBMS.
For effective administration of ADQM databases, it is recommended to use ADQM Control — a related product that provides extensive functionality for monitoring and analyzing the state of DBMS at the level of tables, columns, user queries, and cluster hosts.
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The JOIN clause combines columns from two tables into a new table. A set of data rows in a resulting table depends on the JOIN type and the specified join conditions.
A geo-distributed cluster is a cluster whose nodes are located in several geographically distant data centers. This solution ensures high reliability of the system, which will remain operational even if one of the data centers fails.
Learn about the minimum software requirements for servers of an ADQM cluster.
This article describes how to resolve an issue with an unsupported encryption type that may occur when you install ADQM on a RED OS host and try to kerberize a cluster using Active Directory.
This article provides examples that demonstrate how to perform the basic operations with ADQM/ClickHouse tables using the clickhouse-client console client.
Sharding is a database design principle that suggests locating parts of the same table on different shards. A shard is a cluster node that can consist of one or more replicas. Replicas are servers that duplicate data within a shard. SELECT and INSERT queries can be sent to any replica of a shard, there is no dedicated master.
Indexing is a technique to improve database performance. Indexes are special data structures that allow a database server to quickly find requested rows by values of a key column (or column set) without a full table scan.
A dictionary is a key/value data store that is fully or partially stored in the RAM of the ADQM server and can be used as a reference to substitute data values by keys in the final sample.
Learn about the minimum hardware requirements for servers of an ADQM cluster.
This article describes the parameters that can be configured for ADQM services via ADCM.