0
What else can I help you with?
Differentiate between primary secondary and foreign keys?
Primary key uniquely identifies each record in a database table and must have a unique value for each record. Secondary key is a field that can be used to uniquely identify a record, but it is not the primary key. Foreign key is a field in a table that links to the primary key of another table, establishing a relationship between the two tables.
What is the difference between a primary key and a foreign key?
A primary key uniquely identifies each record in a table and ensures data integrity. A foreign key establishes a relationship between two tables, referencing the primary key of another table to enforce referential integrity.
What is difference between primary key and foreign key?
A primary key is an attribute (or combination of attributes) that uniquely identifies each row in a relation. A primary key is designated by underlining the attribute name. The primary key of an entity set allows us to distinguish among the various entities of the set. A foreign key is an attribute in a relation of database that serves as the primary key of another relation in the same database.
What are the differences between super key primary key candidate key and foreign key?
Super key: A set of attributes that uniquely identifies a tuple in a table. Primary key: A specific super key chosen to uniquely identify each tuple in a table and must be unique and not null. Candidate key: Any super key that could be chosen as the primary key. Foreign key: A field in a table that is a primary key in another table, used to establish a relationship between the two tables.
What is the difference between a Primary Key and a Secondary Key?
A Primary Key is a unique identifier for each record in a database table and is used to enforce entity integrity. A Secondary Key is a non-unique index that is used for querying and organizing data efficiently but does not have the constraint of uniqueness.
Which statement best explains the relationship between primary and secondary industries?
Primary industries create raw materials for secondary industries.
Define the relationship between primary consumers and secondary consumers?
Between that of a Primate and a Scavanger
Differentiate between primary secondary and foreign keys?
Primary key uniquely identifies each record in a database table and must have a unique value for each record. Secondary key is a field that can be used to uniquely identify a record, but it is not the primary key. Foreign key is a field in a table that links to the primary key of another table, establishing a relationship between the two tables.
Similarities between primary and secondary research?
what is the similarities between primary and secondary data
The difference between primary and secondary reserves?
what are the diffrence between primary reserve and secondary reserve?
What relation exists between the primary and secondary voltages and currents?
The relationship between primary and secondary voltages and currents in a transformer is described by the transformer equations. Specifically, the ratio of the primary voltage (V₁) to the secondary voltage (V₂) is equal to the ratio of the number of turns in the primary coil (N₁) to the number of turns in the secondary coil (N₂): V₁/V₂ = N₁/N₂. Similarly, the relationship between the primary current (I₁) and secondary current (I₂) is inversely proportional: I₁/I₂ = N₂/N₁. This means that if voltage is stepped up, current is stepped down, and vice versa, while the power remains approximately constant (ignoring losses).
What is the difference with primary market mortgage and secondary market mortgage?
The Primary Mortgage is that relationship that exists between a lender and a potential borrower. on the other hand, the Secondary Mortgage Market is the relationship that exists after the loan is closed and the lender markets the collateral of that loan for sale to an investor.
Identify the difference between primary sector and secondary?
Identify the difference between primary sector and secondary sector
What is the difference between primary and secondary cell?
Primary can't be recharged, secondary can be recharged.
What is a foreign key in Microsoft Access?
It is a field in one table that is a primary key in another table. It is used to create a relationship between two tables, normally a one to many relationship. The one side is where it is the primary key and where it is the foreign key, that is the many tables.
What is the difference between a primary key and a foreign key?
A primary key uniquely identifies each record in a table and ensures data integrity. A foreign key establishes a relationship between two tables, referencing the primary key of another table to enforce referential integrity.
What determines the voltage that is transferred from the primary to the secondary winding?
The turns ratio between the primary and the secondary.
