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columnar

a. 圆柱的,圆筒形的,分纵栏印刷或书写的

圆柱的,圆筒形的,分纵栏印刷或书写的

WordNet (r) 3.0 (2006) (WordNet)

columnar
adj 1: having the form of a column; "trees with columniform
trunks"; "columnar forms"; "a columnlike tree trunk"
[synonym: {columniform}, {columnar}, {columnlike}]
2: characterized by columns; "columnar construction"

The Collaborative International Dictionary of English v.0.48 (gcide)

Columnar \Co*lum"nar\, a. [L. columnaris, fr. columna.]
Formed in columns; having the form of a column or columns;
like the shaft of a column.
[1913 Webster]

{Columnar epithelium} (Anat.), epithelium in which the cells
are prismatic in form, and set upright on the surface they
cover.

{Columnar structure} (Geol.), a structure consisting of more
or less regular columns, usually six-sided, but sometimes
with eight or more sides. The columns are often fractured
transversely, with a cup joint, showing a concave surface
above. This structure is characteristic of certain igneous
rocks, as basalt, and is due to contraction in cooling.
[1913 Webster]

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Columnar	查看　Columnar　在百度字典中的解释	百度英翻中〔查看〕
Columnar	查看　Columnar　在Google字典中的解释	Google英翻中〔查看〕
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英文字典中文字典相关资料:

sql - What is a columnar database? - Stack Overflow
How do they differ from relational databases? A relation database is a logical concept A columnar database, or column-store, is a physical concept Thus the two terms are not comparable in any meaningful way Column- oriented DMBSs may be relational or not, just as row-oriented DBMS's may adhere more or less to relational principles
How is ColumnarToRow an efficient operation in Spark
In my understanding columnar format is better for MapReduce tasks Even for something like selection of some columns, columnar works well as we don't have to load other columns into memory But in
snowflake cloud data platform - What is hybrid-columnar storage . . .
Columnar Storage organizes data by columns rather than rows Each column's data is stored together, allowing for efficient data compression and faster query performance for analytic workloads that typically access a subset of columns
Whats the difference between NoSQL and a Column-Oriented database?
Some NoSQL databases are column-oriented databases, and some SQL databases are column-oriented as well Whether the database is column or row-oriented is a physical storage implementation detail of the database and can be true of both relational and non-relational (NoSQL) databases Vertica, for example, is a column-oriented relational database so it wouldn't actually qualify as a NoSQL
sql server - What is a columnstore index and how is different from . . .
I am confused about the columnstore index What is a columnstore index, and how it is different from clustered and non-clustered indexes?
amazon redshift - Data modeling in columnar database vs multi . . .
In my way of learning Redshift (my first columnar database), I am struggling to figure out the approach for designing the model Columnar database does promote flat table design, yet admits that star
What are the pros and cons of the Apache Parquet format compared to . . .
Some characteristics of Apache Parquet are: Self-describing Columnar format Language-independent In comparison to Apache Avro, Sequence Files, RC File etc I want an overview of the formats I have
Wide column vs column family vs columnar vs column oriented DB . . .
In genuine column stores, a columnar data layout is adopted such that each column is stored separately on disk Wide-column stores do often support the notion of column families that are stored separately
Is Cassandra a column oriented or columnar database
The definition from Wikipedia also helps further: Wide-column stores such as Bigtable and Apache Cassandra are not column stores in the original sense of the term, since their two-level structures do not use a columnar data layout In genuine column stores, a columnar data layout is adopted such that each column is stored separately on disk
Delete in Postgres citus columnar storage alternatives
1 I am planning to use citus to store system logs for upto n no of days after which they should be deleted Citus columnar store looked like the perfect database for this until I read this where its mentioned no deletes can be performed on columnar So my question is there an alternate way of achieving delete in the columnar store?

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