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What the difference between primary key and scendary key?
A primary key is a unique identifier for a record in a database table and is used to ensure each record is uniquely identifiable. A secondary key is a key used for sorting and indexing purposes, but can have duplicate values within a table.
What is the difference between primary key and secondary key in database?
The primary key is the field containing unique values that aid in database operations. The secondary key is used in addition or as an alternate to the primary key. Both are candidate keys, it's just that one was chosen to be primary.
What is typically unique in each database table?
ID number
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.
Discuss the difference between a composite key and a composite attribute.How would each be indicated in an ERD?
Attribute is the property of entity.The composite attribute is like address(where street no,house no,town name all include).Composite key is also an attribute,but only which attribute are work as a unique identifier. Example:> In an ERD if vendor placed with orders then order(order day, order number) vendor(vendor code,vendor address) Here, order and vendor both are entity and order number, vendor code both are Composite key(because those are unique)but vendor address is a Composite attribute and order day(may be not unique)is an attribute only. So, we can conclude that all attribute not Composite key.
A unique identifier also is called a primary key?
That is true :)
Is variable is also called as identifier?
No, the name of the variable is its identifier.
What does GUID stand for?
In computing, "GUID" stands for "Globally Unique Identifier" "GUI" can also stand for "Graphical User Interface"
What is the number of protons in an atom known as?
It is called the atomic no. of element. It is also equal to the no. of electrons in the atom.
What is also called a record player?
A phonograph is commonly called a record player.
What are the two parts of a uniform resource?
the protocol identifier and the resource name
What the difference between primary key and scendary key?
A primary key is a unique identifier for a record in a database table and is used to ensure each record is uniquely identifiable. A secondary key is a key used for sorting and indexing purposes, but can have duplicate values within a table.
Can a Folio No on a patient's chart in a doctor's office be the patient's Social Security Number?
First, the SSN should not be used as an identifier. SSN is specific for government programs and other uses are a misuse of the number. It can also put a patient's identity at risk. Each Folio No should be a unique identifier using a unique number for each patient, such as 10145, 10146, etc.
Can you provide the bike identifier by serial number for this product?
The bike identifier, also known as the serial number, can be found on the product.
What is the process for obtaining a BMX bike identifier?
To obtain a BMX bike identifier, you typically need to register your bike with a national or local BMX organization. This may involve providing information such as the make, model, and serial number of your bike. Some organizations may also require you to pay a registration fee. Once registered, you will receive a unique identifier that can help in identifying your bike in case it is lost or stolen.
How do you read a barcode without a barcode scanner?
BArcodes have an ISBN attached . This is the number seen beneath the barcode. Its the unique product identifier and can also be used to recognise the product once entered in the recognition database
What is the grandfather called if his grandson has same name?
If the grandson shares the same name as his grandfather, the grandfather is often referred to as "Grandpa [Name]" or "Grandfather [Name]" to distinguish between the two. In some families, he may also be called "Big [Name]" or "Papa [Name]" to create a more unique identifier. Ultimately, the specific term can vary based on family traditions and preferences.
