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True or false A foreign key is a field in one table that refers to the primary key field in another table and indicates how the the tables are related?
Wiki User
∙ 7y ago
True.
Wiki User
∙ 7y ago
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What is foreign keyword in java?
There is no "foreign" keyword in Java, however, there is a native keyword that declares native methods in a native language, such as C or C++.For full list of keywords in Java see related question.
When current in primary coil decreases current in the secondary coil also decreases?
It is reverse. when load current in the secondary changes the primary current also changes directly. Load current is dependent on the load. I am assuming that the question is related to a normal distribution transformer.
What is the another name for inverse chebyshev filters?
Chebyshev Type II filter. See related link, below.
What are your goals in education?
Personally, I'd like to be very well-educated by the time I am 25. I hope to achieve a bachelor's degree in International Relations and Development Studies, then a Master's Degree in a related field. With these degrees I'd like to work for a government agency or NGO to aid foreign nations.
What is the relationship of primary windings of a transformer to the secondary windings regarding output and input voltage?
The phase relationship between the primary voltage and the secondary voltage of a transformer is 180 degrees (typically) on single phase transformers. If working with three phase transformers, a zero phase shift is often used in Y/Y grounded transformers. If the transformer is wired Delta / Wye, the phase shift will be 30 degrees. I've seen transformers with a phase shift of 150 as well (quite abnormal, but it exists!) due to the starring and a delta / wye configuration. If you are looking at a transformer phasor diagram, this will show the phase shift between primary or secondary (three phase transformers). For single phase, there should be a drawing showing polarity markings - what goes in the polarity marking on the primary comes out on the secondary polarity marking.
How functional dependency is related to database table design?
The functional dependency is related to the database table design through the foreign and primary keys. The foreign and primary keys are functionally dependent on each other.
What is foreign and local related literature?
Foreign literature is from another country and local is from around you.
What are related colors?
Related colour's are when the secondary colour and another secondary colour have the same primary colour.
What color related?
Related colour's are when the secondary colour and another secondary colour have the same primary colour.
How do you apply a foreign key in a database?
The foreign key is a reference to a key (identifier) of a row in another or even the same table. When the foreign key is not null, it implies that there's an entry in the referenced table with that identifier. The syntax depends on wich database are you using, check the page in the related links below.
When the primary key of one table is represented in a second table to form a relationship?
This is known as a "foreign key" (the data it points to is foreign to the current record). It is also commonly called a "foreign key constraint", usually in database systems where the database will perform additional data integrity checks when a primary key is updated or removed (such as restricting deletion of the primary record, clearing the value in the foreign key field, or cascading the deletion to the related records).
What is chemo specific reaction in chemistry?
A chemospecific reaction is one where a reaction occurs at only one functional group but not another, e.g. the oxidation of a primary alcohol but not a secondary alcohol. Chemoselective is a related term which indicates a preference of one functional group over another; both reactions may occur, but there will be a major and a minor product.
How entities can be related to each other using primary and foreign keys?
Do you mean ... One-To-Many One-To-One Many-To-Many Many-To-One Vic(S)
How do you explain a table of values amd a graph?
Any explanation will depend on whether or not the table of values and the graph are related to one another. Nothing in the question indicates that they are.
What is primary dysmenorrhea related to?
Primary dysmenorrhea is related to the production of prostaglandins, natural chemicals the body makes that cause an inflammatory reaction.
What are the related literature of computer?
what are related literature about computer
Why do you use the concept of foreign key?
You use foreign keys to relate the information on one table to another. For example, Table one has customer information, name, address, user-id, etc and Table two has the orders that the customers request. Customer-id, item, number of items, cost per item, taxes, shipping address, etc.. You put in a foreign key on the orders table, so that the Customer-id is related to the User-id on the Customer table one. OK ?
