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- примеры употребления (несколько фраз с переводом)
- этимология
Что (кто) такое null string - определение
THE UNIQUE STRING OF LENGTH ZERO
Null string; Empty word; ""; ''; The empty string; Nullable symbol; Zero length string; Zero-length string
Null-terminated string
CHARACTER STRING TERMINATED BY THE NULL BYTE (0X00); USED IN E.G. THE C PROGRAMMING LANGUAGE
ASCIIZ; Strcpy s; ASCIZ; Strerr; Strcpy(); CString; Null terminated strings; Strncmp(); User:Asmita yendralwar/Strcspn; Strcat s; Null terminated string; Nul terminated string; Nul-terminated string; NUL-terminated string; NUL terminated string; Zero-terminated string; Zero terminated string; 0-terminated string; O-terminated string
In computer programming, a null-terminated string is a character string stored as an array containing the characters and terminated with a null character (a character with a value of zero, called NUL in this article). Alternative names are C string, which refers to the C programming language and ASCIIZ (although C can use encodings other than ASCII).
Null allele
NONFUNCTIONAL ALLELE (A VARIANT OF A GENE) CAUSED BY A GENETIC MUTATION
Null mutation; Null Allele; Null alleles; Null mutant
A null allele is a nonfunctional allele (a variant of a gene) caused by a genetic mutation. Such mutations can cause a complete lack of production of the associated gene product or a product that does not function properly; in either case, the allele may be considered nonfunctional.
Null (SQL)
![omega (ω)]] character is used to represent Null in [[database theory]].](https://commons.wikimedia.org/wiki/Special:FilePath/Db null.png?width=200 "omega (ω)]] character is used to represent Null in [[database theory]].")
![outer join]] query with Null placeholders in the result set. The Null markers are represented by the word <code>NULL</code> in place of data in the results. Results are from [[Microsoft SQL Server]], as shown in SQL Server Management Studio.](https://commons.wikimedia.org/wiki/Special:FilePath/Sql query1.png?width=200 "outer join]] query with Null placeholders in the result set. The Null markers are represented by the word <code>NULL</code> in place of data in the results. Results are from [[Microsoft SQL Server]], as shown in SQL Server Management Studio.")
SPECIAL MARKER AND KEYWORD IN SQL INDICATING THAT SOMETHING HAS NO VALUE
Sql null; NULL (SQL); NVL; NULLIF; SQL CASE; Sql case; Codd tables; Codd table; COALESCE; C-table; Uncertain database; NULL marks; Null (database)
In SQL, null or NULL is a special marker used to indicate that a data value does not exist in the database. Introduced by the creator of the relational database model, E.
Википедия
Empty string
In formal language theory, the empty string, or empty word, is the unique string of length zero.
