Data Warehousing

When I started in 2007 (6 Years ago) on Data Warehousing a terabyte of data was a lot, I had no idea what was in stored. I was amazed when 6 years later we already at exabytes! It seems that there is a quiet revolution in progress.
What is data warehousing?

Processor or Virtual Storage · 1 Bit = Binary Digit · 8 Bits = 1 Byte · 1024 Bytes = 1 Kilobyte · 1024 Kilobytes = 1 Megabyte · 1024 Megabytes = 1 Gigabyte · 1024 Gigabytes = 1 Terabyte · 1024 Terabytes = 1 Petabyte · 1024 Petabytes = 1 Exabyte · 1024 Exabytes = 1 Zettabyte · 1024 Zettabytes = 1 Yottabyte · 1024 Yottabytes = 1 Brontobyte · 1024 Brontobytes = 1 Geopbyte· 1 Bit = Binary Digit Disk Storage · 8 Bits = 1 Byte · 1000 Bytes = 1 Kilobyte · 1000 Kilobytes = 1 Megabyte · 1000 Megabytes = 1 Gigabyte · 1000 Gigabytes = 1 Terabyte · 1000 Terabytes = 1 Petabyte · 1000 Petabytes = 1 Exabyte · 1000 Exabytes = 1 Zettabyte · 1000 Zettabytes = 1 Yottabyte · 1000 Yottabytes = 1 Brontobyte · 1000 Brontobytes = 1 Geopbyte

Bit

A bit is a value of either a 1 or 0 (on or off).

Nibble

A Nibble is 4 bits.

Byte

A Byte is 8 bits.

Kilobyte (KB)

A Kilobyte is 1,024 bytes.

Megabyte (MB)

A Megabyte is 1,048,576 bytes or 1,024 Kilobytes

873 pages of plaintext (1,200 characters)
4 books (200 pages or 240,000 characters)
Gigabyte (GB)

A Gigabyte is 1,073,741,824 (230) bytes. 1,024 Megabytes, or 1,048,576 Kilobytes.

894,784 pages of plaintext (1,200 characters)
4,473 books (200 pages or 240,000 characters)
341 digital pictures (with 3MB average file size)
256 MP3 audio files (with 4MB average file size)
1 650MB CD
Terabyte (TB)

A Terabyte is 1,099,511,627,776 (240) bytes, 1,024 Gigabytes, or 1,048,576 Megabytes.

916,259,689 pages of plaintext (1,200 characters)
4,581,298 books (200 pages or 240,000 characters)
349,525 digital pictures (with 3MB average file size)
262,144 MP3 audio files (with 4MB average file size)
1,613 650MB CD's
233 4.38GB DVD's
40 25GB Blu-ray discs
Petabyte (PB)

A Petabyte is 1,125,899,906,842,624 (250) bytes, 1,024 Terabytes, or 1,048,576 Gigabytes.

938,249,922,368 pages of plaintext (1,200 characters)
4,691,249,611 books (200 pages or 240,000 characters)
357,913,941 digital pictures (with 3MB average file size)
268,435,456 MP3 audio files (with 4MB average file size)
1,651,910 650MB CD's
239,400 4.38GB DVD's
41,943 25GB Blu-ray discs
Exabyte (EB)

A Exabyte is 1,152,921,504,606,846,976 (260) bytes, 1,024 Petabytes, or 1,048,576 Terabytes.

960,767,920,505,705 pages of plaintext (1,200 characters)
4,803,839,602,528 books (200 pages or 240,000 characters)
366,503,875,925 digital pictures (with 3MB average file size)
274,877,906,944 MP3 audio files (with 4MB average file size)
1,691,556,350 650MB CD's
245,146,535 4.38GB DVD's
42,949,672 25GB Blu-ray discs
Zettabyte (ZB)

A Zettabyte is 1,180,591,620,717,411,303,424 (270) bytes, 1,024 Exabytes, or 1,048,576 Petabytes.

983,826,350,597,842,752 pages of plaintext (1,200 characters)
4,919,131,752,989,213 books (200 pages or 240,000 characters)
375,299,968,947,541 digital pictures (with 3MB average file size)
281,474,976,710,656 MP3 audio files (with 4MB average file size)
1,732,153,702,834 650MB CD's
251,030,052,003 4.38GB DVD's
43,980,465,111 25GB Blu-ray discs
Yottabyte (YB)

A Yottabyte is 1,208,925,819,614,629,174,706,176 (280) bytes, 1,024 Zettabytes, or 1,048,576 Exabytes.

1,007,438,183,012,190,978,921 pages of plaintext (1,200 characters)
5,037,190,915,060,954,894 books (200 pages or 240,000 characters)
384,307,168,202,282,325 digital pictures (with 3MB average file size)
288,230,376,151,711,744 MP3 audio files (with 4MB average file size)
1,773,725,391,702,841 650MB CD's
257,054,773,251,740 4.38GB DVD's
45,035,996,273,704 25GB Blu-ray discs