'Key k' diaporamas de présentation

Schema Refinement and Normal Forms

Schema Refinement and Normal Forms. Chapter 19. The Evils of Redundancy. Redundancy is at the root of several problems associated with relational schemas: redundant storage, insert/delete/update anomalies

814 views • 70 slides

Fundamentals of Applied Cryptanalysis

721 views • 59 slides

CSE 131 Final Exam Review Fall 2011

738 views • 59 slides

Computer Security Set of slides 2

Computer Security Set of slides 2. Dr Alexei Vernitski. Cryptography. Codes Ciphers (read more in the textbooks). Example of code: Morse code. For discussion. In what circumstances would one want to use Morse code? For example: Is Morse code suitable for storing data?

591 views • 48 slides

Active Objects & Co.

494 views • 37 slides

DIGITAL SIGNATURES

466 views • 34 slides

WiFi, Bluetooth & Layers

702 views • 32 slides

Chord

Chord. A Scalable Peer-to-peer Lookup Service for Internet Applications Prepared by Ali Yildiz (with minor modifications by Dennis Shasha). Outline. What is Chord? Consistent Hashing A Simple Key Lookup Algorithm Scalable Key Lookup Algorithm Node Joins and Stabilization Node Failures.

718 views • 32 slides

747 views • 19 slides

BCNF vs 3NF

BCNF vs 3NF. BCNF : For every functional dependency X->Y in a set F of functional dependencies over relation R , either: Y is a subset of X or, X is a superkey of R 3NF : For every functional dependency X->Y in a set F of functional dependencies over relation R , either:

1.56k views • 8 slides