Object-Relational DBMSs, Second Edition by Michael Stonebraker

By Michael Stonebraker

Bankruptcy 1 The DBMS Matrix 1.1 A DBMS type Matrix 1.2 Quadrant 1: basic facts with out Queries 1.3 Quadrant 2: easy info with Queries 1.4 Quadrant three: complicated information with no Queries 1.5 Quadrant four: advanced information with Queries 1.6 common functions 1.7 Technological Drivers within the DBMS industry 1.8 precis bankruptcy 2 attribute 1: Base facts style Extension 2.1 want for Base style Extension 2.2 a greater means: Extensible facts forms 2.3 User-Defined features and Operators 2.4 totally Object-Relational style Extension 2.5 precis bankruptcy three Examples of Base kind Extension 3.1 Geographic info platforms functions 3.2 photograph kind Library purposes 3.3 the volume information sort bankruptcy four attribute 2: complicated gadgets 4.1 kind Constructors 4.2 utilizing style Constructors 4.3 Collections and Client-Server communique 4.4 Base varieties and intricate items 4.5 precis bankruptcy five different variety Constructors? 5.1 A Time sequence instance 5.2 An Array instance 5.3 precis 86 bankruptcy 6 attribute three: Inheritance? 6.1 facts Inheritance 6.2 Inheritance of capabilities 6.3 precis bankruptcy 7 attribute four: principles 7.1 Update-Update ideas 7.2 Query-Update ideas 7.3 Update-Query principles 7.4 Query-Query principles 7.5 Semantics: The darkish facet of ideas 7.6 precis bankruptcy eight Object-Relational Parsing 8.1 How an Object-Relational Parser Works 8.2 precis bankruptcy nine conventional Relational Optimizers 9.1 How Relational Optimizers paintings 9.2 appearing the restrict at the desk 9.3 tools for Processing the subscribe to bankruptcy 10 Object-Relational Optimizers 10.1 Extension 1: Operator and serve as Notation 10.2 Extensions 2 and three: B-Trees and User-Defined comparability Operators 10.3 Extension four: User-Defined Selectivity features 10.4 Extension five: User-Defined Negators 10.5 Extension 6: User-Defined Commutators 10.6 Extension 7: entry tools on a functionality of the information 10.7 Extension eight: shrewdpermanent Ordering of the Clauses in a Predicate 10.8 Extension nine: Optimization of pricey features 10.9 Extension 10: User-Defined entry equipment 10.10 Extension eleven: "Flattening" complicated item Queries 10.11 Extension 12: "In-Line" units 10.12 Extension thirteen: Indexes on Attributes of units 10.13 Extension 14: Optimization of Scans of Inheritance Hierarchies 10.14 Extension 15: Optimization of sign up for over Inheritance Hierarchies 10.15 Extension sixteen: help for User-Defined Aggregates 10.16 precis bankruptcy eleven Implementation of Rule structures 11.1 aid for Triggers 11.2 Extension to extra basic ideas 11.3 Scalability 11.4 precis bankruptcy 12 Architectural recommendations for advertisement proprietors 12.1 approach 1: Do not anything 12.2 approach 2: Rewrite a Relational Engine from Scratch 12.3 approach three: promote platforms 12.4 process four: An Object-Relational most sensible on a Relational garage supervisor 12.5 procedure five: Incremental Evolution 12.6 method 6: Write a Wrapper a hundred and seventy 12.7 method 7: Write a Gateway a hundred seventy five 12.8 process eight: expand an Object-Oriented DBMS 181 12.9 process nine: Glue an Object-Relational Engine onto a power Language 12.10 precis bankruptcy thirteen extra on Object-Relational structure 13.1 Calling Extensions 185 13.2 Middleware 193 13.3 precis two hundred bankruptcy 14 Extension functionality: Implementation Makes a distinction 14.1 Examples 14.2 An SQL-92 answer 14.3 The Informix 2-D Spatial DataBlade process 14.4 A Z rework answer 14.5 a last Spatial Extension 14.6 A comparability of the choices 14.7 precis bankruptcy 15 Object-Relational DBMS and alertness Servers 15.1 Implications of a Thick Database on conventional program Servers 15.2 Two-Tier Thick Database version 15.3 Three-Tier Thick Database version 15.4 precis bankruptcy sixteen Multiquadrant difficulties 16.1 A Video provider software 16.2 An assurance software 16.3 precis bankruptcy 17 suggestions to Multiquadrant difficulties 17.1 assisting dossier approach facets of an program 17.2 helping Lower-Right Quadrant purposes 17.3 precis bankruptcy 18 Database layout for Object-Relational DBMSs 18.1 Relational Database layout 18.2 purposes for difficulties 18.3 demanding situations in Object-Relational Database layout 18.4 precis bankruptcy 19 the following nice Wave in DBMS know-how 19.1 evaluation of the ebook 19.2 assessment of the Object-Relational market 19.3 Integration of Object-Relational good points with Database companies 19.4 a quick historic point of view 19.5 precis References Index

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Figure 2-24. Window before pressing Enlarge button Let's look at what happens when we press the Enlarge button. As shown in Figure 2-25, all the widgets are now repacked with additional parameters of -ipadx => 20, ipady => 20. These new options are in addition to any other parameters the widgets were packed with before. If an option is repeated, the last one specified overrides the previous ones. Figure 2-25. Window after pressing Enlarge button The window is suddenly huge! Subsequent presses of the Enlarge button will do nothing more to the window because all the widgets already have an -ipadx and -ipady of 20.

Sometimes it is necessary to change the options of the group of cells that makes up your grid. You can control resizing and the minimum size of a cell with the gridColumnconfigure and gridRowconfigure methods. Each takes a column or a row number as its first argument and then takes some optional arguments that will change the configuration of that column or row. Both gridColumnconfigure and gridRowconfigure work very similar to the configure method used with widgets. Unlike the configure method used with widgets, however, the options you can specify with gridColumnconfigure and gridRowconfigure cannot be used with the grid() command.

X" Effectively leaves a blank space where a widget would otherwise be placed. "^" A widget in row x will span row x and x + 1 when this character is placed in the grid command for row x + 1 in that row/column position. The number of "^" characters must match the number of columns the widget spans in row x. * The following sections include some examples that illustrate what the special characters do. 002, I got a nasty core dump. 0, so if you get this error also, check which version you have. Spanning columns The following bit of code creates three rows of buttons.

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