Confine refers to something that encloses or restrains. It can mean scope within a small group. The verb means to hold within a location or keep within limits
Asterisk (*) is a star-shaped symbol used in writing. Most commonly used to signal footnotes. Sometimes used for clarifications or censorship
SQL constraints enforce rules for data entry into tables. Constraints are part of database schema governing data relationships. Constraints prevent invalid data from entering database
Verb: to prevent something from spreading beyond a particular place. Can mean doing only one thing or being restricted to a particular area. Can refer to being sent to a place like prison. Can describe boundaries or restrictions within an area
Primary key uniquely identifies each record in a database table. Can be natural key (existing unique attribute) or surrogate key. Primary key is a choice of minimal set of attributes for tuple identification
Smokeless tobacco is used through chewing, sniffing, or placing between gum and cheek. South Asia accounts for 80% of global smokeless tobacco consumption. Products contain over 3000 constituents, including multiple cancer-causing chemicals