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What is a flag in a database?
It’s mainly used to mean any Boolean variable, that is, a variable that can only hold the values “true” or “false” (or also “null”, in case of SQL). Normally it represents the answer to whether a certain attribute is set.
What is stored only in the master database?
Explanation: Server-scoped Dynamic Management View is stored only in the Master database.
Why do we use flag?
It is used as a symbol, a signalling device, or for decoration. National flags are patriotic symbols with widely varied interpretations that often include strong military associations because of their original and ongoing use for that purpose. Flags are also used in messaging, advertising, or for decorative purposes.
Where do we need database?
Organisations use databases for a variety of reasons: the police have details of all known criminals in a database, eg crimes they’ve comitted. schools use a database to store details about their pupils, eg how many days they’ve been off school sick.
What is master DB?
The Master database is the primary configuration database in SQL Server. It contains information on all the databases that exist on the server, including the physical database files and their locations. The Master database also contains SQL Server’s configuration settings and login account information.
How to set flag to database column Stack Overflow?
The task is creating sql script which set flag “Y” or “N” to existed dummy database line “Status” if integer value more or less ’10’ database consists of three columns person money (5 or 100) status (dummy – should be updated via stored procedure) Working backwards through that query…
What to do with flags in a database?
For databases without the set type, you could open a new table to represent the set of entities for which each flag is set. E.g. for a Table “Students” you could have tables “RegisteredStudents”, “SickStudents”, TroublesomeStudents etc. Each table will have only one column: the student_id.
How can I generate a table of flags in SQL?
Down the road, you can write yourself a little utility that will generate another table of flags (in whatever pattern of rows/columns you choose) from the bitmasks in your primary working table. You can then do ordinary SQL queries on that computed/derived table.
Which is an example of flags in Stack Overflow?
A good example of this would be the badges on stack overflow, or the operating system field in bugzilla. Any subset of the flags may be set for a given entry. Usually, I do c and c++ work, so my gut reaction is to use an unsigned integer field as a set of bits which can be flipped…