Sinossi
Understanding SQL's underlying theory is the best way to guarantee that your SQL code is correct and your database schema is robust and maintainable. On the other hand, if you're not well versed in the theory, you can fall into several traps. In SQL and Relational Theory, author C.J. Date demonstrates how you can apply relational theory directly to your use of SQL. With numerous examples and clear explanations of the reasoning behind them, you'll learn how to deal with common SQL dilemmas, such as:
- Should database access granted be through views instead of base tables?
- Nulls in your database are causing you to get wrong answers. Why? What can you do about it?
- Could you write an SQL query to find employees who have never been in the same department for more than six months at a time?
- SQL supports "quantified comparisons," but they're better avoided. Why? How do you avoid them?
- Constraints are crucially important, but most SQL products don't support them properly. What can you do to resolve this situation?
Database theory and practice have evolved since Edgar Codd originally defined the relational model back in 1969. Independent of any SQL products, SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of the material available anywhere. Anyone with a modest to advanced background in SQL will benefit from the many insights in this book.
Le informazioni nella sezione "Riassunto" possono far riferimento a edizioni diverse di questo titolo.
Informazioni sull?autore
C.J. Date has a stature that is unique within the database industry. C.J. is a prolific writer, and is well-known for his best-selling textbook: An Introduction to Database Systems (Addison Wesley). C.J. is an exceptionally clear-thinking writer who can lay out principles and theory in a way easily understood by his audience.
Le informazioni nella sezione "Su questo libro" possono far riferimento a edizioni diverse di questo titolo.
Altre edizioni note dello stesso titolo
Risultati della ricerca per SQL and Relational Theory: How to Write Accurate SQL...
Immagini fornite dal venditore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: Goodwill Books, Hillsboro, OR, U.S.A.
Valutazione del venditore 5 su 5 stelle
Condizione: good. Signs of wear and consistent use. Codice articolo GICWV.0596523068.G
Compra usato
EUR 5,71
Spese di spedizione:
EUR 3,47
In U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: ThriftBooks-Dallas, Dallas, TX, U.S.A.
Valutazione del venditore 5 su 5 stelle
Paperback. Condizione: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. Codice articolo G0596523068I3N00
Compra usato
EUR 9,27
Spese di spedizione:
GRATIS
In U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: ThriftBooks-Atlanta, AUSTELL, GA, U.S.A.
Valutazione del venditore 5 su 5 stelle
Paperback. Condizione: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. Codice articolo G0596523068I3N00
Compra usato
EUR 9,27
Spese di spedizione:
GRATIS
In U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: World of Books (was SecondSale), Montgomery, IL, U.S.A.
Valutazione del venditore 5 su 5 stelle
Condizione: Very Good. Item in very good condition! Textbooks may not include supplemental items i.e. CDs, access codes etc. Codice articolo 00083356015
Compra usato
EUR 9,30
Spese di spedizione:
GRATIS
In U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: BookResQ., West Valley City, UT, U.S.A.
Valutazione del venditore 5 su 5 stelle
paperback. Condizione: Very Good. Priority Mail is available on this item. No international shipping. Codice articolo A190124uzmug169344
Compra usato
EUR 4,48
Spese di spedizione:
EUR 6,09
In U.S.A.
Quantità: 1 disponibili
Immagini fornite dal venditore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: Goodwill of Greater Milwaukee and Chicago, Racine, WI, U.S.A.
Valutazione del venditore 5 su 5 stelle
Condizione: acceptable. Book is considered to be in acceptable condition. The actual cover image may not match the stock photo. Book may have one or more of the following defects: noticeable wear on the cover dust jacket or spine; curved, dog eared or creased page s ; writing or highlighting inside or on the edges; sticker s or other adhesive on cover; CD DVD may not be included; and book may be a former library copy. Codice articolo SEWV.0596523068.A
Compra usato
EUR 9,28
Spese di spedizione:
EUR 2,61
In U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: Half Price Books Inc., Dallas, TX, U.S.A.
Valutazione del venditore 5 su 5 stelle
paperback. Condizione: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! Codice articolo S_450340569
Compra usato
EUR 8,96
Spese di spedizione:
EUR 3,04
In U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: The Book Spot, Sioux Falls, MN, U.S.A.
Valutazione del venditore 5 su 5 stelle
Paperback. Condizione: New. Codice articolo Abebooks159006
Compra nuovo
EUR 52,91
Spese di spedizione:
GRATIS
In U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: WorldofBooks, Goring-By-Sea, WS, Regno Unito
Valutazione del venditore 5 su 5 stelle
Paperback. Condizione: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Codice articolo GOR004152857
Compra usato
EUR 86,88
Spese di spedizione:
EUR 6,35
Da: Regno Unito a: U.S.A.
Quantità: 1 disponibili
Foto dell'editore
SQL and Relational Theory: How to Write Accurate SQL Code
Da: Toscana Books, AUSTIN, TX, U.S.A.
Valutazione del venditore 5 su 5 stelle
Paperback. Condizione: new. Excellent Condition.Excels in customer satisfaction, prompt replies, and quality checks. Codice articolo Scanned0596523068
Compra nuovo
EUR 93,65
Spese di spedizione:
EUR 3,74
In U.S.A.
Quantità: 1 disponibili