join

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join

[jȯin]
(computer science)
A portion of a robotic control program that directs an activity to resume after it has been interrupted.
(mathematics)
The join of two elements of a lattice is their least upper bound.

join

(database)
inner join (common) or outer join (less common).

join

(theory)

join

In relational database management, to match one table (file) against another based on some condition creating a third table with data from the matching tables. For example, a customer table can be joined with an order table creating a table for all customers who purchased a particular product.

The default type of join is known as an "inner" join. It produces a resulting record if there is a matching condition. For example, matching shipments with receipts would produce only those shipments that have been received. On the other hand, an "outer" join using that example would create a record for every shipment whether or not it was received. The data for received items would be attached to the shipments, and empty, or null, fields would be attached to shipments without receipts.


A Simple Join
This example matches the sales table against the product table based on product number to derive the product description.
References in periodicals archive ?
New Delhi: The federal front proposed by West Bengal chief minister Mamata Banerjee which took off with three provincial ruling parties including her own Trinamool Congress joining hands may prove to be a non-starter mainly due to a lack of trust in her.
Continually making efforts to improve upon the services it offers, du has expanded the Arabic library available through its Video On Demand service, a popular feature among du TV s customers, by joining hands with entertainment company Rotana.
Sri Ram Singh, a police official said that the police thought of joining hands with the residents in building this bridge.
AGOURA HILLS - Joining hands in dance, lifting voices in song and praising God in prayer, women will celebrate the beginning of a new Jewish month at Temple Beth Haverim on Tuesday.
It is paramount that for some joining hands is uncomfortable.
While this is a principle for which Sherry has long been an advocate, the fact that today we are joining hands with so many others truly marks an historic day.
ISLAMABAD -- Lights of the Parliament will be switched off during Earth Hour today (Saturday at 08:30pm to 09:30 pm) to show Pakistan's commitment of joining hands with the world for energy conservation.
ESO is proud to be engaging with the public in a non-traditional manner and we look forward to joining hands with other media to mark Oman's Environment Day," Dana said.
In an open letter to the community, Mulayam said on Thursday he had committed a mistake by joining hands with Kalyan.
Advani, who is on a two-day election campaign tour to Orissa, questioned the logic of India joining hands with Pakistan in the fight against militancy in the backdrop of Islamabad refusing to fulfill its commitments.