'Lipyeow lim' presentation slideshows

ICS 321 Spring 2011 The Database Language SQL (ii)

ICS 321 Spring 2011 The Database Language SQL (ii). Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. UNION, INTERSECT & EXCEPT. Set-manipulation constructs for result sets of SQL queries that are union-compatible

387 views • 18 slides

ICS 421 Spring 2010 Indexing (2)

ICS 421 Spring 2010 Indexing (2). Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Hash Indexes. As for any index, 3 alternatives for data entries k* : Data record with key value k < k , rid of data record with search key value k >

242 views • 15 slides

ICS 321 Fall 2010 The Database Language SQL ( i )

ICS 321 Fall 2010 The Database Language SQL ( i ). Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Example Relations. R1. Sailors( sid : integer, sname : string, rating: integer, age: real) Boats( bid: integer,

228 views • 14 slides

ICS 321 Fall 2011 Overview of Storage & Indexing ( i )

ICS 321 Fall 2011 Overview of Storage & Indexing ( i ). Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Data Storage. CPU. Main Memory Random access Volatile Flash Memory Random access Random writes are expensive Disk Random access

245 views • 14 slides

ICS 321 Fall 2009 XML Databases

ICS 321 Fall 2009 XML Databases. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. eXtended Markup Language (XML). Design goals: straightforwardly usable over the Internet. support a wide variety of applications. compatible with SGML.

223 views • 14 slides

Fall 2010 ICS321 Data Storage & Retrieval Mon & Wed 12-1:15 PM

Fall 2010 ICS321 Data Storage & Retrieval Mon & Wed 12-1:15 PM. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Staff. Instructor: Lipyeow Lim Firstname is fine! www2.hawaii.edu/~lipyeow/ POST 303E, lipyeow@hawaii.edu , 808-956-3495

226 views • 13 slides

ICS 321 Fall 2010 Algebraic and Logical Query Languages

207 views • 12 slides

ICS 321 Fall 2011 Functional Dependencies

ICS 321 Fall 2011 Functional Dependencies. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Example: Movies1. What are the keys for this relational ? What if you ignore the column starName ? Can starName be a key ?.

195 views • 12 slides

Fall 2010 ICS321 Data Storage & Retrieval Mon & Wed 12-1:15 PM

Fall 2010 ICS321 Data Storage & Retrieval Mon & Wed 12-1:15 PM. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Staff. Instructor: Lipyeow Lim www2.hawaii.edu/~lipyeow/ POST 303E, lipyeow@hawaii.edu , 808-956-3495

187 views • 9 slides

ICS 321 Fall 2009 Schema Refinement & Normal Forms

ICS 321 Fall 2009 Schema Refinement & Normal Forms. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. The Problem with Redundancy. Hourly_Emps. Suppose hourly wages are determined by rating Redundant storage : (8,10) stored multiple times

188 views • 8 slides

ICS 321 Fall 2009 Schema Refinement & Normal Forms

ICS 321 Fall 2009 Schema Refinement & Normal Forms. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. The Problem with Redundancy. Hourly_Emps. Suppose hourly wages are determined by rating ( this is an eg of functional dependency )

122 views • 2 slides