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Column (database) In a relational database, a column is a set of data values of a particular type, one value for each row of a table. [ 1] A column may contain text values, numbers, or even pointers to files in the operating system. [ 2] Columns typically contain simple types, though some relational database systems allow columns to contain ...
Table (information) A table is an arrangement of information or data, typically in rows and columns, or possibly in a more complex structure. Tables are widely used in communication, research, and data analysis. Tables appear in print media, handwritten notes, computer software, architectural ornamentation, traffic signs, and many other places.
Column (periodical) A column[ 1] is a recurring piece or article in a newspaper, magazine or other publication, where a writer expresses their own opinion in few columns allotted to them by the newspaper organization. People who write columns are described as columnists . What distinguishes a column from other forms of journalism is its regular ...
Comma-separated values ( CSV) is a text file format that uses commas to separate values, and newlines to separate records. A CSV file stores tabular data (numbers and text) in plain text, where each line of the file typically represents one data record. Each record consists of the same number of fields, and these are separated by commas in the ...
However, unlike rows and columns in a table, a relation's attributes and tuples are unordered. A relation consists of a heading and a body. The heading defines a set of attributes, each with a name and data type (sometimes called a domain). The number of attributes in this set is the relation's degree or arity. The body is a set of tuples.
Tables are a way of presenting links, data, or information in rows and columns. They are a complex form of list, formatted into a systematic grid pattern. Tables might be useful for presenting mathematical data such as multiplication tables, comparative figures, or sporting results. They may also be useful for presenting equivalent words in two ...
Relation (database) Relation, tuple, and attribute represented as table, row, and column respectively. In database theory, a relation, as originally defined by E. F. Codd, [ 1] is a set of tuples (d 1 ,d 2 ,...,d n ), where each element d j is a member of D j, a data domain. Codd's original definition notwithstanding, and contrary to the usual ...
Typographic alignment. In typesetting and page layout, alignment or range is the setting of text flow or image placement relative to a page, column (measure), table cell, or tab (and often to an image above it or under it). The type alignment setting is sometimes referred to as text alignment, text justification, or type justification.