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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.
Difference between primary and secondary sequence database?
Primary sequence databases contain raw sequence data derived from the sequencing of genes etc. whereas secondary sequence databases contain information that is derived from primary sequence databases. For example this could be active site residues of protein families that were found by carrying out multiple sequence alignments on the raw primary sequence database data for a set of related proteins. Primary sequence databases can be nucleic databases (such as EMBL, GenBank or DDBJ) or protein databases (such as Swiss-PROT or trEMBL). An example of a secondary sequence database is PROSITE.
What is the difference between a candidate key an a secondary key?
A candidate key is a unique key that can uniquely identify each record in a database table, whereas a secondary key is a non-unique key used for data retrieval and indexing purposes. Candidate keys can be chosen as the primary key for the table, while secondary keys provide alternate ways to access and organize the data.
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.
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.
Identify the difference between primary sector and secondary?
Identify the difference between primary sector and secondary sector
The difference between primary and secondary reserves?
what are the diffrence between primary reserve and secondary reserve?
What is the difference between primary and secondary cell?
Primary can't be recharged, secondary can be recharged.
What is the difference between primary and secondary vitamin deficiency?
what is the difference between primary and seconday vitamin deficiency
What is the difference between primary ans secondary industry?
secondary is cooler
What is the difference between primary data and secondary data Don't make it complicated please?
The difference between primary data and secondary data is that primary data is the information from the original research.
What is difference between primary and secondary card holder?
The major difference is that the Primary Account holder is responsible for all the amounts due on both the Primary Card and the Secondary Card.
What are the primary and secondary structures of aircraft?
Sorry, I want to know the difference between Primary, Secondary and Tertiary structure of aircraft
Difference between primary n secondary markets?
the difference is that primary markets are really fat. the secondary market is a skinny kid that doesnt eat candy
What is difference Between Primary and Secondary DNS?
Secondary DNS gets its records from the Primary DNS Server. The secondary DNS is essentially there in case the primary DNS doesn't respond.
Explain the difference between primary and secondary market research data give an example of each and explain how each helps define a business customer?
difference between primary and secondary market
What is the difference between primary information and secondary information?
Primary source information is original material,Secondary sources analyze and interpret primary sources
