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The normal term would be a primary key, not a record key.
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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?
A primary key is a unique identifier for each record in a database table and is used to ensure data integrity and enforce entity integrity. A secondary key, also known as a candidate key, is an alternate unique key that can be used to identify records, but is not designated as the primary key.
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 also called a record player?
A phonograph is commonly called a record player.
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.
What are the two parts of a uniform resource?
the protocol identifier and the resource name
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 a PID and how is it useful when troubleshooting a system?
PID stands for Process Identifier, a uniquely assigned integer that identifies a process in the operating system. In any system, applications use PID to identify the process uniquely. Also, it is used in diagnosing the problems with the process in Multi-Tasking systems.
What database fields would be the most suitable to use as primary key?
Generally, the most suitable fields to use as a primary key in a database are those that are unique and have a simple and stable value. Common choices include a unique identifier field, such as an auto-incrementing integer or GUID, or a combination of multiple fields that together uniquely identify each record. It is also important to choose a field or combination of fields that do not change frequently to maintain data integrity.
What is institution number 004 of TD Canada trust bank?
Each banking institution in North America (and beyond) is assigned a unique "Institution Number". TD Canada Trust has been assigned the number 004.The full identifier of a bank account is made up of this institution number, a branch identifier (also known as a "transit number") and an account number.Each bank is free to define its branch and account numbers more or less as it pleases, but because the full identifier always starts with the unique institution number, there is no danger of accounts at 2 banks having the same account number.This is of course very important in our computer-centric banking systems.
How does youtube encrypt their urls Becuse i want to do that on my website with just 11 characters?
The characters following the "v=" portion of a YouTube URL are not some form of encryption, but rather are designed to be a unique identifier for the file. The identifier can be said to be in "Base 62", because each position in the identifier can be a digit, capital letter, or small letter, totaling 62 possibilities for each character, resulting in a total of 73,786,976,294,838,206,464 (73.8 quintillion, short scale) possible unique identifiers, or about 10 billion identifiers for every man, woman, and child on the planet. Such an identifier can be generated several ways. First, it can be sequential, starting with 00000000001. It can also be generated randomly using a function such as PHP's rand() or mt_rand(), which then must be compared against previously-assigned identifiers to prevent duplication. Another possibility is that the binary video file can be hashed into an eleven-character string.
The SSID is also known as the?
service set identifier, a 32-character unique identifier attached to theheader of packets sent over a WLAN that acts as a password when a mobiledevice tries to connect to the BSS. The SSID differentiates one WLAN from another, so all access points and all devices attempting to connect to a specific WLAN must use the same SSID. A device will not be permitted to join the BSS unless it can provide the unique SSID. Because an SSID can be sniffed inplain text from a packet it does not supply any security to the network. An SSID is also referred to as a network name because essentially it is a name that identifies a wireless network.
