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A keyspace may contain column families or super columns. Each super column contains one or more column families, and each column family contains at least one column. The keyspace is the highest abstraction in a distributed data store. This is fundamental in preserving the structural heuristics in dynamic data retrieval. [5]
A hot-rolled HSS-box section cut open with a bandsaw, demonstrating residual stress A hollow structural section ( HSS ) is a type of metal profile with a hollow cross section . The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology.
The standard column family is a NoSQL object that contains columns of related data. It is a tuple (pair) that consists of a key–value pair, where the key is mapped to a value that is a set of columns. In analogy with relational databases, a standard column family is as a "table", each key–value pair being a "row". [1] Each column is a tuple ...
In analogy with relational databases, a column family is as a "table", each key-value pair being a "row". Each column is a tuple consisting of a column name, a value, and a timestamp. In a relational database table, this data would be grouped together within a table with other non-related data. Two types of column families exist:
A super column family consists of a row key and a number of super columns. A super column family is a NoSQL object that contains column families. It is a tuple (pair) that consists of a key–value pair, where the key is mapped to a value that are column families. [1] In analogy with relational databases, a super column family is something like ...
The Ionic column is always more slender than the Doric; therefore, it always has a base: [5] Ionic columns are eight and nine column-diameters tall, and even more in the Antebellum colonnades of late American Greek Revival plantation houses. [citation needed] Ionic columns are most often fluted. After a little early experimentation, the number ...
A reinforced concrete column is a structural member designed to carry compressive loads, composed of concrete with an embedded steel frame to provide reinforcement. For design purposes, the columns are separated into two categories: short columns and slender columns.
W-group tool steel gets its name from its defining property of having to be water quenched. W-grade steel is essentially high carbon plain-carbon steel.This group of tool steel is the most commonly used tool steel because of its low cost compared to others.