Database. Principles Programming Performance - download pdf or read online

By Patrick O'Neil

This moment variation depends on an analogous winning process that exotic the 1st: it covers the foundations of database concept with unrivaled thoroughness, and it conscientiously hyperlinks concept to the true international of database programming and management. A cautious dialogue of SQL criteria and a mess of examples drawn from genuine databases-Oracle, DB2, and Informix-complements the authors' concept-oriented guide, permitting you to increase product-specific figuring out and to benefit the $64000 variations among the SQL dialects that may assist you to write moveable applications.

* Focuses greatly at the object-relational version that's quickly gaining recognition and revolutionizing the database undefined. assortment kinds and UDF's are completely covered.
* Introduces new relational beneficial properties of SQL taken from the most recent types of brand new hottest database items, Oracle, DB2, and Informix.
* bargains thorough assurance of the SQL-99 average, together with additions designed that can assist you take complete benefit of the object-relational model.
* presents elevated programming examples meant to enhance your figuring out of transaction processing and blunder handling.
* Explains in actual fact the foundations of logical database layout, together with these in terms of the E-R version and normalization, with a couple of new illustrations and examples.
* provides the newest indexing and question processing innovations, reminiscent of bitmap indexing, and exhibits the right way to use them to accomplish major functionality improvements.

Show description

Read Online or Download Database. Principles Programming Performance PDF

Best storage & retrieval books

Teaching Electronic Literacy: A Concepts-Based Approach for - download pdf or read online

Tuition library media experts will locate this concepts-based method of instructing digital literacy an imperative easy instrument for teaching scholars and lecturers. It offers step by step guideline on how to define and overview wanted info from digital databases and the web, easy methods to formulate profitable digital seek techniques and retrieve correct effects, and the way to interpret and significantly study seek effects.

Evaluating Natural Language Processing Systems: An Analysis by Karen Sparck Jones PDF

This accomplished state of the art e-book is the 1st dedicated to the real and well timed factor of comparing NLP platforms. It addresses the complete zone of NLP approach review, together with goals and scope, difficulties and technique. The authors supply a wide-ranging and cautious research of review strategies, bolstered with huge illustrations; they relate structures to their environments and improve a framework for correct evaluate.

Applied Information Security: A Hands-on Approach by David Basin PDF

This e-book explores primary rules for securing IT platforms and illustrates them with hands-on experiments which may be conducted via the reader utilizing accompanying software program. The experiments spotlight key info protection difficulties that come up in smooth working structures, networks, and internet purposes.

Get The Essence of Databases PDF

The Prentice corridor Essence of Computing sequence offers a concise, sensible and uniform advent to the middle parts of an undergraduate laptop technology measure. Acknowledging the new adjustments inside better schooling, this strategy makes use of various pedagogical instruments - case reviews, labored examples and self-test questions, to underpin the scholars studying.

Extra resources for Database. Principles Programming Performance

Sample text

This is the same as saying that any two distinct rows of a table can be distinguished by differences in some column value; or, looking at it a different way, that the set of all columns distinguish any two rows. Is it possible that some subset of the columns distinguishes any two rows? Yes. For example, in the CUSTOMERS table, the single c i d column distinguishes between any two rows. ) We say that Cld is a superkey for the CUSTOMERS table, meaning that any two rows in the table will always have distinct values in this (singleton) set of columns.

And the other refers to relations (the counterpart of tables), tuples (corresponding to rows), attributes (for columns), etc. We'll use both sets of terms so you can learn to recognize them easily. Thus we will frequently refer to the column 29 Chapter 2 30 THE RELATIONAL MODEL names of a table as the attributes of that table (for instance, the attributes of the table CUSTOMERS are c i d , cname, c i t y , and di s e n t ) , or to rows as tuples. A database is defined to be a set of named tables, or relations.

M Property 1 is just a mathematical way of saying that the values any row u takes on for the set of attributes K are unique. , u[K] = v[K]), they are really one row after all (u = v). We refer to a set of attributes that fulfills property 1 but not necessarily property 2 as a superkey. Property 2 assures us that a key is a minimal set of attributes with property 1. Thus a key is always a superkey, but a key has the additional property that no proper subset is a superkey. The fact that a singleton attribute with property 1 is always minimal follows from the fact that the empty set of attributes, (p, does not differentiate two rows: we say that u[(p] = ν[φ] for all rows u and v.

Download PDF sample

Rated 4.26 of 5 – based on 20 votes