Dimension (data warehouse)

A dimension is a structure that categorizes facts and measures in order to enable users to answer business questions. Commonly used dimensions are people, products, place and time.

In a data warehouse, dimensions provide structured labeling information to otherwise unordered numeric measures. The dimension is a data set composed of individual, non-overlapping data elements. The primary functions of dimensions are threefold: to provide filtering, grouping and labelling.

These functions are often described as "slice and dice". Slicing refers to filtering data. Dicing refers to grouping data. A common data warehouse example involves sales as the measure, with customer and product as dimensions. In each sale a customer buys a product. The data can be sliced by removing all customers except for a group under study, and then diced by grouping by product.

A dimensional data element is similar to a categorical variable in statistics.

Typically dimensions in a data warehouse are organized internally into one or more hierarchies. "Date" is a common dimension, with several possible hierarchies:

Dimension (shampoo)

Dimension Shampoo was a heavily perfumed shampoo product, which was produced in the early 1980s. This was by the personal products division of Lever Brothers, and marketed by Ogilvy. The shampoo came in a distinctive dark yellow bottle, and left a strong muskone and civetone aroma on the hair. There was also a companion conditioner marketed with this product. It has been stated by many previous users of dimension shampoo that it caused their hair to fall out, due to the extreme astringency of the product.

On April 18, 1985, Lever Brothers reorganized their marketing structure and moved their personal products division business to J. Walter Thompson.

At the time, Dimension was a highly popular brand. (Lever spent an estimated $12.5M in advertising the brand in 1984.) However, shortly after Lever's marketing reorganization, Dimension ran-out on store shelves, and never returned. Lever Brothers never made any public explanation for the disappearance of the product; although they referred to the marketing reorganization as a consolidation of the personal products brands, and stated that the decision in-part had to do with its plans for international marketing.

One-dimensional space

In physics and mathematics, a sequence of n numbers can be understood as a location in n-dimensional space. When n = 1, the set of all such locations is called a one-dimensional space. An example of a one-dimensional space is the number line, where the position of each point on it can be described by a single number.

One-dimensional geometry

Lines

The real number line and the real projective line are one-dimensional, though the latter is homeomorphic to a circle.

In algebraic geometry there are several structures which are technically one-dimensional spaces but referred to in other terms. For a field k, it is a one-dimensional vector space over itself. Similarly, the projective line over k is a one-dimensional space. In particular, if k = ℂ, the complex number plane, then the complex projective line P¹(ℂ) is one-dimensional with respect to ℂ, even if it is also known as the Riemann sphere.

More generally, a ring is a length-one module over itself. Similarly, the projective line over a ring is a one-dimensional space over the ring. In case the ring is an algebra over a field, these spaces are one-dimensional with respect to the algebra, even if the algebra is of higher dimensionality.

Dreams (2004 film)

Dreams is a 2004 Tamil Malayalam romantic film directed by Kasthuri Raja and produced by Saraswathi Srikanth. The film featured Raja's son Dhanush in the lead role with Diya and Parul Yadav playing other pivotal roles. The film opened to negative reviews and became a failure at the box office.

Cast

Production

The project was launched shortly after the success of Thulluvadho Ilamai in 2002, but as Dhanush's Kaadhal Kondein became a large success, Dreams was stalled temporarily as Dhanush's dates became blocked. The film ran into a legal tussle with the makers of his other film, Sullan, with the producers adamant that Dreams was released first although to no avail. The film's delay meant that Dhanush shot ten straight days for the project to complete it, while the delay also had resulted in failings in continuity. By the time of the release, the producer Srikanth and director Kastoori Raja were still engaged in a legal tussle.

Dreams (Fleetwood Mac song)

"Dreams" is a song written by singer Stevie Nicks, for the group Fleetwood Mac's 1977 album, Rumours. It is the only U.S. No. 1 hit for the group where it sold over a million copies, and remains one of their best known songs.

Background and writing

The members of Fleetwood Mac were experiencing emotional upheavals while recording Rumours. Drummer Mick Fleetwood was going through a divorce. Bassist John McVie was separating from his wife, keyboardist Christine McVie. Guitarist Lindsey Buckingham and lead singer Stevie Nicks were ending their eight-year relationship. "We had to go through this elaborate exercise of denial," explained Buckingham to Blender magazine, "keeping our personal feelings in one corner of the room while trying to be professional in the other."

Nicks wrote the song at the Record Plant studio in Sausalito, California, in early 1976. "One day when I wasn't required in the main studio," remembers singer Stevie Nicks to Blender, "I took a Fender Rhodes piano and went into another studio that was said to belong to Sly, of Sly & the Family Stone. It was a black-and-red room, with a sunken pit in the middle where there was a piano, and a big black-velvet bed with Victorian drapes."

Dreams (Klaus Schulze album)

Dreams is the nineteenth album by Klaus Schulze. It was released in 1986, and in 2005 was the third Schulze album reissued by Revisited Records. The reissue bonus track was released early 2004 in Hambühren as a limited promo CD Ion.

Track listing

All tracks composed by Klaus Schulze.

Personnel

References

External links