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Super and subtypes are used in database design to represent hierarchical relationships between entities. A supertype is a generalized entity that encompasses shared attributes, while subtypes are specialized entities that inherit from the supertype and may have additional attributes or constraints. This approach helps to reduce redundancy and ensure data integrity by allowing for more efficient organization of related data. It is commonly applied in scenarios like employee classifications or product categories.
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What is the real name of sub zero?
Elder Sub-zero real name is Bi-Han
What does sub n mean in algebra?
sub n usually means the term number means the term number. like in sequences and series.
Why is it often necessary to use multiples and sub multiples of a standard unit?
It isn't technically necessary; it is used for convenience, to avoid using very small or very large numbers.
What is the difference between Sub Main Distribution Board and distribution board?
main db using mcb sub main db using mccb that is deference
What is the name for the answer in a subtraction problem?
The number of the sub you do first
What are database schema and sub-schemas?
A database schema is an actual plan for a database system. Sub-schemas are separate divisions that are used to achieve the plan for the database system.
What is Categorization in database management system?
modeling of a single sub class with a relationship that involve more than one super class each called categorization.
Description of database subschema?
What are the purpose of developing a sub-schema in database? In database management, the Subschema pronounced "sub-skee-mah." is an individual user's partial view of the database while the schema is the entire database. It is the applications programmer's view of the data within the database pertinent to the specific application. A subschema has access to those areas, set types, record types, data items, and data aggregates of interest in the pertinent application to which it was designed. Naturally, a software system usually has more than one programmer assigned and includes more than one application. This means there are usually many different sub schemas for each schema. The following are a few of the many reasons sub schemas are used: # Sub schemas provide different views of the data to the user and the programmer, who do not need to know all the data contained in the entire database. # Sub schemas enhance security factors and prohibit data compromise. # Sub schemas aid the DBA while assuring data integrity. Each data item included in the subschema will be assigned a location in the user working area (UWA). The UWA is conceptually a loading and unloading zone, where all data provided by the DBMS in response to a CALL for data is delivered. It is also where all data to be picked up by the DBMS must be placed.
What is an antonym for the prefix sub?
Super-. Sub- means "below" (think submarine) and super- means "above" (think supervisor).
What is the opposite of super?
Sub
What is the difference between the base words super and sub?
Think of 'super' as over or above and 'sub' as under or below.
How do you invoke an overwritten super class from the sub class?
super
What portions of a super class can be used by subclass?
Any members of a superclass which are declared as public or protected can be used by all subclasses.
What is the opposite of sub?
Also super or supra
What is d-sub?
"D-sub" in an appriviation of D-subminiature which is a class of connector used in computers. The most common types are serial (DE-9) parallel (used for printers) and VGA (for computer monitors).
Is inheritence in java only based on super class and sub class?
Yes. Inheritance is achieved by using the super class and sub class concept
What is data sub-language?
A data Sublanguage is a computer language used to define or manipulate the structure of a relational database management system(DBMS) e.g QBE, SQL.
