Schema vs Null - What's the difference?
schema | null |
An outline or image universally applicable to a general conception, under which it is likely to be presented to the mind (for example, a ).
(databases) A formal description of the structure of a database: the names of the tables, the names of the columns of each table, and the data type and other attributes of each column.
(markup languages) A formal description of data, data types, and data file structures, such as for XML files.
(logic) A formula in the language of an axiomatic system, in which one or more schematic variables appear, which stand for any term or subformula of the system, which may or may not be required to satisfy certain conditions.
A non-existent or empty value or set of values.
Zero]] quantity of [[expression, expressions; nothing.
Something that has no force or meaning.
(computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
(computing) the attribute of an entity that has no valid value.
One of the beads in nulled work.
(statistics) null hypothesis
Having no validity, "null and void"
insignificant
* 1924 , Marcel Proust, Within a Budding Grove :
absent or non-existent
(mathematics) of the null set
(mathematics) of or comprising a value of precisely zero
(genetics, of a mutation) causing a complete loss of gene function, amorphic.
As nouns the difference between schema and null
is that schema is schema, diagram while null is zero, nil; the cardinal number before einn.schema
English
Noun
(en-noun)Synonyms
* (universally-applicable image or outline) schemat * (databases) schemat * (logic) axiom schema, schematDerived terms
* conceptual schema * logical schema * physical schemaAnagrams
* *References
* “schema]” listed in the [[w:Oxford English Dictionary, Oxford English Dictionary], second edition (1989) English nouns with irregular plurals ----
null
English
Noun
(en noun)- (Francis Bacon)
- Since no date of birth was entered for the patient, his age is null .
Adjective
(en adjective)- In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.