Title
Sql And Relational Theory: How To Write Accurate Sql Code,New
Delivery time: 8-12 business days (International)
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 Uptodate Treatment Of The Material Available Anywhere. Anyone With A Modest To Advanced Background In Sql Will Benefit From The Many Insights In This Book.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.