NCHAR is another data type available in Oracle database. This data type is very similar to the char data type with some key differences. NCHAR is also known as the national character set. This is a data type that allows us to store Unicode characters.
It is really recommended that you watch the two videos over Unicode and UTF-8 because this video is going to talk a lot about it. Why is it that we have an entire data type dedicated to storing Unicode? That will be easily understood once we understand how character sets and encodings are applied to Oracle. They are applied at the database level. That means that you have a character set that applies to the entire database. This is in contrast to some database management systems that allow you to apply a data type at the table and column level. For example, in MySQL you can make a table have a character set, and make a specific column in that table a different character set. That means we can customize everything at the expense of adding potential complexity and confusion. Oracle does not work that way. In Oracle, we define one character set for the entire database.
The problem with defining a character set for the entire database is that it may not be the character set we want to use for everything. That is where the NCHAR column comes in. The NCHAR column allows us to have a Unicode column inside of a database that does not use Unicode as the default character set. That is important because it is very often that we want to use Unicode but we may not need to use it for everything, for example if that application is working with ASCII nearly all of the time.
If you are using Unicode for the database, then NCHAR is not going to be needed and should not be used. This data type is not as widely accepted, so only use it if you absolutely need to, specifically when you need to store Unicode in a non-Unicode database. Additionally, there is some controversy when it comes to whether or not you should use the CHAR and NCHAR data types in Oracle at all. We will discuss why in an upcoming video.
In the next video we are going to go over some specific character sets that Oracle can use. See you then!
Suppor me! http://www.patreon.com/calebcurry
Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter
More content: http://CalebCurry.com
Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
The following are humorous (and sometimes serious too ) quotes gathered from the Web, Usenets personal .sig and other sources (in particular the excellent and original Top5 mailing list). Since its all a big rip-off, I am assuming no copyright whatsoever. I dont even guarantee that they are accurate. Now that youve been warned, enjoy.
Men Bashing Women Bashing Some images available as wallpaper Some images available on a royalty-free compilation CD Some images available as a poster More: Sexual quotes.
"Do not confuse: Patching up things with our lovers and Repairing the leaks in our inflate-a-dolls ." "Not all men are annoying. Some are dead." "Macho does not prove mucho." — Zsa Zsa Gabor. "Give a man a free hand and hell run it all over you." — Mae West (1892—1980). "You know the movie youre watching is a chick flick if you wake up and your wife is crying." — Rick Oie. "It takes a woman twenty years to make a man of her son, and another woman twenty minutes to make a fool of him." — Helen Rowland.
"Supposedly I was created in gods image. I dont know. youd think god would have a bigger penis than this." — Anthony Myers. "I now stand corrected — there is one gift a woman does not prefer to come in a small package." "When was the last time you saw a size small package of condoms ?" "It would be a mistake to put fluoride in condoms because a cavity is exactly what Im hoping for." — James Knowles. "Any woman that thinks the way to a mans heart is through his stomach is aiming just a little too high." "Men only have two faults: Everything they say and everything they do." "Behind Every Good Man Is An Even Better Woman." "You cant throw him back because he doesnt meet the legal size limit." — Dave Henry, Honeymoon Tip for Brides. "All women become like their mothers. That is their tragedy. No man does. Thats his." — Oscar Wilde. "Knowing what I do now about women, if I could just travel back in time to when I was 16 years old, I bet I would have gotten laid by now." — Ed Smith. "There is so little difference between husbands you might as well keep the first." — Adela Rogers St. John. "Outside every thin woman is a fat man trying to get in." — Katherine Whitehorn. "You can tell a lot about a woman by her hands. For instance if they are placed around your throat, shes probably slightly upset." "Men are like small children. You bring a new one home and the ones already there resent it." "Men are like bank accounts. Without a lot of money they dont generate a lot of interest." "If Adam had had a real hairy back, we probably wouldnt be here today." — Dave Henry.e.