Showing posts with label databases. Show all posts
Showing posts with label databases. Show all posts

7/25/2012

Hibernate: A Developer's Notebook Review

Hibernate: A Developer's Notebook
Average Reviews:

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This book is not intended as a comprehensive/blow-by-blow tutorial. It is a part of o'reilly's new 'notebook' series which is intended as a VERY brief intro to a new technology for experienced developers.
This book is for folks who are pretty experienced with Java and databases, and its intention is to provide a very high-level fast-paced into to hibernate.
In my opinion, it does these things well. I've got about 9 years experience with Java, and about 15 years with SQL/databases, and about 15 years commercial development experience. I've never used hibernate, and I decided to use it in a project. I'm in a HUGE hurry, and I needed to get up to speed FAST. This book got me there. In this sense, I think the book succeeds very well.
There are plenty of spots where I needed additional help, and a quick web search or a quick jump out to hibernates reference documentation (hibernate.org) was all that was required.
This book does what it intends. If you need hand-holding, detailed instructions, or in-depth tutorials, find another book. (And as far as I know, there aren't any).
:)

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Do you enjoy writing software, except for the database code? Hibernate:A Developer's Notebook is for you.

Database experts may enjoy fiddling with SQL, but you don't have to--the rest of the application is the fun part. And even database experts dread the tedious plumbing and typographical spaghetti needed to put their SQL into a Java program. Hibernate: A Developers Notebook shows you how to use Hibernate to automate persistence: you write natural Java objects and some simple configuration files, and Hibernate automates all the interaction between your objects and the database.You don't even need to know the database is there, and you can change from one database to another simply by changing a few statements in a configuration file.

Hibernate: A Developer's Notebook walks you through the ins and outs of using Hibernate, from installation and configuration, to complex associations and composite types. Two chapters explore ways to write sophisticated queries, which you can express either through a pure Java API, or with an SQL-inspired, but object-oriented, query language. Don't let that intimidate you though: one of the biggest surprises in working with Hibernate is that for many of the common real-world application scenarios, you don't need an explicit query at all.

If you've needed to add a database backend to your application, don't put it off.It's much more fun than it used to be, and Hibernate: A Developer's Notebook shows you why.

Here's what a few reviewers had to say:

"I'm sitting on an airplane after finishing Hibernate: A Developer's Notebook.It's rare to find a book on a new Java technology that you can get through on a domestic flight.That this notebook effectively and succinctly tackles object-relational mapping makes it, and Hibernate, even more impressive.Many books in this category would need to be checked luggage.With this book, you travel first class." --Mike Clark

"A simple persistence framework deserves a simple book, and this one delivers. The examples are well described and easy to understand, yet sophisticated enough to demonstrate Hibernate in a real-world context. Jim, I'm a new fan."--Bruce Tate

About the new Developer's Notebook Series from O'Reilly: Developer's Notebooks are a new book series covering important new tools for software developers.Developer's Notebooks stress example over explanation and practice over theory. They are about learning by doing; by experimenting with tools and discovering what works."All lab, no lecture," with a thoughtful lab partner to guide the way.


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7/21/2012

Data and Reality Review

Data and Reality
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This text is deemed fundamental by, for instance, Christopher J DATE, the current leader in the field of Relational Data Management. This alone is reason enough to grant it a place at my wishlist.

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7/01/2012

Access Data Analysis Cookbook (Cookbooks) Review

Access Data Analysis Cookbook (Cookbooks)
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This book is not about designing forms, primary keys, or the use of built-in wizards to make easy queries or reports. This book is about applying Access to real-world business problems. The book addresses how to query data, how to move data to and from Access in various ways, the calculation of different financial and investment terms, and other such problems. The reader of this book should already have some Access experience and thus know how to get around the Access user interface, know basic table structures and relations among them, and how to construct simple queries. As long as you know this much or more, the book should be quite useful to anyone interested in business solutions using Access to analyze the data that is involved. The book consists of a series of recipes that provide example queries, programming tips, and also some requisite math. The following is a summary of each chapter's contents. Each section of each chapter is actually a recipe consisting of a problem - the section title - and its solution(s).
1. Query Construction - A variety of query issues are addressed, including the use of the AND, OR, IN, and NOT operators; creating union queries; and understanding join types.
1.1. Finding Unmatched Records
1.2. Making AND and OR Do What You Expect
1.3. Working with Criteria Using the IN Operator
1.4. Excluding Records with the NOT Operator
1.5. Parameterizing a Query
1.6. Returning a Top or Bottom Number of Records
1.7. Returning Distinct Records
1.8. Returning Random Records
1.9. Fine-Tuning Data Filtering with Subqueries
1.10. Combining Data with Union Queries
1.11. Inserting On-the-Fly Fields in Select Queries
1.12. Using Aliases to Simplify Your SQL Statements
1.13. Creating a Left Join
1.14. Creating a Right Join
1.15. Creating an Outer Join
2. Calculating with Queries - More on using queries to find solutions to business problems. It demonstrates how to apply aggregate functions, custom functions, regular expressions, and crosstabs.
2.1. Finding the Sum or Average in a Set of Data
2.2. Finding the Number of Items per Group
2.3. Using Expressions in Queries
2.4. Using Custom Functions in Queries
2.5. Using Regular Expressions in Queries
2.6. Using a Cartesian Product to Return All Combinations of Data
2.7. Creating a Crosstab Query to View Complex Information
3. Action Queries - How to apply queries to perform activities such as inserting, updating, and deleting data.
3.1. Running an Update Query
3.2. Appending Data
3.3. Deleting Data
3.4. Creating Tables with Make-Table Queries
4. Managing Tables, Fields, Indexes, and Queries - Introduces how to programmatically create and manipulate tables and queries.
4.1. Creating Tables Programmatically
4.2. Altering the Structure of a Table
4.3. Creating and Using an Index
4.4. Programmatically Removing a Table
4.5. Programmatically Creating a Query
5. Working with String Data - Recipes on managing text-based data. Shows how to isolate parts of a string, how to remove spaces at any place in a string, and how to manipulate numbers stored as text.
5.1. Returning Characters from the Left or Right Side of a String
5.2. Returning Characters from the Middle of a String When the Start Position and Length Are Known
5.3. Returning the Start Position of a Substring When the Characters Are Known
5.4. Stripping Spaces from the Ends of a String
5.5. Stripping Spaces from the Middle of a String
5.6. Replacing One String with Another String
5.7. Concatenating Data
5.8. Sorting Numbers That Are Stored as Text
5.9. Categorizing Characters with ASCII Codes
6. Using Programming to Manipulate Data - How to use arrays, access the Windows Registry, encrypt data, and use transaction processing. Also covered are search methods, charts, and manipulating data relationships.
6.1. Using Excel Functions from Access
6.2. Working with In-Memory Data
6.3. Working with Multidimensional Arrays
6.4. Sorting an Array
6.5. Flattening Data
6.6. Expanding Data
6.7. Encrypting Data
6.8. Applying Proximate Matching
6.9. Using Transaction Processing
6.10. Reading from and Writing to the Windows Registry
6.11. Creating Charts
6.12. Scraping Web HTML
6.13. Creating Custom Report Formatting
6.14. Rounding Values
6.15. Running Word Mail Merges
6.16. Building a Multifaceted Query Selection Screen
7. Importing and Exporting Data - Different ways of moving data into and out of Access. Covers import/ export specifications, using the FileSystemObject, XML with XSLT, and communicating with SQL Server. Exchanging data with other applications in the Office suite is also covered. Also covers how to create an RSS feed.
7.1. Creating an Import/Export Specification
7.2. Automating Imports and Exports
7.3. Exporting Data with the FileSystemObject
7.4. Importing Data with the FileSystemObject
7.5. Importing and Exporting Using XML
7.6. Generating XML Schemas
7.7. Using XSLT on Import or Export
7.8. Working with XML via the MSXML Parser
7.9. Reading and Writing XML Attributes
7.10. Creating an RSS Feed
7.11. Passing Parameters to SQL Server
7.12. Handling Returned Values from SQL Server Stored Procedures
7.13. Working with SQL Server Data Types
7.14. Handling Embedded Quotation Marks
7.15. Importing Appointments from the Outlook Calendar
7.16. Importing Emails from Outlook
7.17. Working with Outlook Contacts
7.18. Importing Data from Excel
7.19. Exporting Data to Excel
7.20. Talking to PowerPoint
7.21. Selecting Random Data
8. Date and Time Calculations - How to add time, count elapsed time, work with leap years, and manage time zones in your calculations.
8.1. Counting Elapsed Time
8.2. Counting Elapsed Time with Exceptions
8.3. Working with Time Zones
8.4. Working Around Leap Years
8.5. Isolating the Day, Month, or Year
8.6. Isolating the Hour, Minute, or Second
8.7. Adding Time
9. Business and Finance Problems - Ways of calculating depreciation, loan paybacks, and return on investment are introduced, and investment concerns such as moving averages, Head and Shoulders patterns, Bollinger Bands, and trend calculations are discussed. One recipe explains how latitude and longitude are used to determine distances between geographical areas.
9.1. Calculating Weighted Averages
9.2. Calculating a Moving Average
9.3. Calculating Payback Period
9.4. Calculating Return on Investment
9.5. Calculating Straight-Line Depreciation
9.6. Creating a Loan Payment Schedule
9.7. Using PivotTables and PivotCharts
9.8. Creating PivotTables
9.9. Charting Data
9.10. Finding Trends
9.11. Finding Head and Shoulders Patterns
9.12. Working with Bollinger Bands
9.13. Calculating Distance Between Zip Codes
Chapter 10. Statistics - The most math intensive of the chapters, it discusses statistical techniques such as frequency, variance, kurtosis, linear regression, combinations, and permutations. All the recipes here have great value in data analysis.
10.1. Creating a Histogram
10.2. Finding and Comparing the Mean, Mode, and Median
10.3. Calculating the Variance in a Set of Data
10.4. Finding the Covariance of Two Data Sets
10.5. Finding the Correlation of Two Sets of Data
10.6. Returning All Permutations in a Set of Data
10.7. Returning All Combinations in a Set of Data
10.8. Calculating the Frequency of a Value in a Set of Data
10.9. Generating Growth Rates
10.10. Determining the Probability Mass Function for a Set of Data
10.11. Computing the Kurtosis to Understand the Peakedness or Flatness of a Probability Mass Distribution
10.12. Determining the Skew of a Set of Data
10.13. Returning a Range of Data by Percentile
10.14. Determining the Rank of a Data Item
10.15. Determining the Slope and the Intercept of a Linear Regression
10.16. Measuring Volatility
One final word of advise is to purchase "Head First SQL" or some other good book on SQL if you don't already feel proficient. Although the book briefly explains each query it shows, I don't think the explanation is sufficient unless you see the stuff every day. A good thing about the book is that it shows screenshots of the application in just about every recipe and usually gives directions in clear numbered steps.

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If you have large quantities of data in a Microsoft Access database, and need to study that data in depth, this book is a data cruncher's dream. Access Data Analysis Cookbook offers practical recipes to solve a variety of common problems that users have with extracting Access data and performing calculations on it. Each recipe includes a discussion on how and why the solution works. Whether you use Access 2007 or an earlier version, this book will teach you new methods to query data, different ways to move data in and out of Access, how to calculate answers to financial and investment issues, and more. Learn how to apply statistics to summarize business information, how to jump beyond SQL by manipulating data with VBA, how to process dates and times, and even how to reach into the Excel data analysis toolkit. Recipes demonstrate ways to:

Develop basic and sophisticated queries
Apply aggregate functions, custom functions, regular expressions, and crosstabs
Apply queries to perform non-passive activities such as inserting, updating, and deleting data
Create and manipulate tables and queries programmatically
Manage text-based data, including methods to isolate parts of a string and ways to work with numbers that are stored as text
Use arrays, read and write to the Windows registry, encrypt data, and use transaction processing
Use the FileSystemObject, use XML with XSLT, communicate with SQL Server, and exchange data with other Office products
Find answers from time-based data, such as how to add time, count elapsed time, work with leap years, and how to manage time zones in your calculations
Deal with business and finance problems, including methods for calculating depreciation, loan paybacks, and Return on Investment (ROI)
Explore statistical techniques, such as frequency, variance, kurtosis, linear regression, combinations and permutations
Access Data Analysis Cookbook is a one-stop-shop for extracting nuggets of valuable information from your database, and anyone with Access experience will benefit from these tips and techniques, including seasoned developers. If you want to use your data, and not just store it, you'll find this guide indispensable.

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6/18/2012

Learning SQL Review

Learning SQL
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Like everyone else, I'm pressed for time. It's all I can do to keep up with Java, let alone related incidental technologies such as SQL, JavaScript, HTML, Ant, etc. But as one reviewer pointed out: make no mistake, you need to know SQL. And if you don't (hell, even if you do), this is just a flat-out good book to have and read. I had previously purchased and read "SQL for Dummies", but threw that book out when I got this one. (To be honest, it wasn't just this book that made me toss the "Dummies" book; I never really liked it to begin with.)
I like the way "Learning SQL" is written. Sure, facts are presented, but the author does a masterful job of telling you how and why those facts exist. In addition, the conversational tone of the book proceeds along the path you'd expect from a real conversation: from the simpler to the more complex, in a logical and sensical path. (Okay, so most conversations don't fall into that category. But this book sure does, so do yourself a favor and buy it!)
Oh, and one more thing related to being pressed for time: it's not the technical-typical 700+ pages, it's just a few hundred.

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Updated for the latest database management systems -- including MySQL 6.0, Oracle 11g, and Microsoft's SQL Server 2008 -- this introductory guide will get you up and running with SQL quickly. Whether you need to write database applications, perform administrative tasks, or generate reports, Learning SQL, Second Edition, will help you easily master all the SQL fundamentals. Each chapter presents a self-contained lesson on a key SQL concept or technique, with numerous illustrations and annotated examples. Exercises at the end of each chapter let you practice the skills you learn. With this book, you will:



Move quickly through SQL basics and learn several advanced features
Use SQL data statements to generate, manipulate, and retrieve data
Create database objects, such as tables, indexes, and constraints, using SQL schema statements
Learn how data sets interact with queries, and understand the importance of subqueries
Convert and manipulate data with SQL's built-in functions, and use conditional logic in data statements

Knowledge of SQL is a must for interacting with data. With Learning SQL, you'll quickly learn how to put the power and flexibility of this language to work.


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5/30/2012

Database Systems: Design, Implementation, and Management Review

Database Systems: Design, Implementation, and Management
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I'm a technical person but have very little DB experience and purchased the book because I had to for a college class. I feel the book was simply OK. Some points were made well others I had to read several times. Over all the explanations were not as concise as I would like but in all fairness DB concepts are hard to explain. The overall layout was good however I think there should have been more attention during the intro to familiarize the reader with DB's and the related concepts before delving in to the details of each phase of DB creation.
My only real gripe is that a new revision is published every year and the previous version of the $100 + dollar book becomes worthless. To save money I bought the previous version and found all the material I needed. However for the final exam the instructor of the online class gave us page numbers to use as reference so I was forced to buy the latest version which was the same book with a few new references...
If you are buying this book for reference or if you are buying this because you are taking a face to face class I recommend that you buy the previous version required by the instructor at a greatly reduced cost. You may be able to do this w/ an online class if the professor (or classmates) are flexible and willing to help reconcile the different page numbers.


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Database Systems: Design, Implementation, and Management, Eighth Edition, a market-leader for database texts, gives readers a solid foundation in practical database design and implementation. The book provides in-depth coverage of database design, demonstrating that the key to successful database implementation is in proper design of databases to fit within a larger strategic view of the data environment. Updates for the eighth edition include additional Unified Modeling Language coverage, expanded coverage of SQL Server functions, all-new business intelligence coverage, and added coverage of data security. With a strong hands-on component that includes real-world examples and exercises, this book will help students develop database design skills that have valuable and meaningful application in the real world.

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10/27/2011

A Developer's Guide to Data Modeling for SQL Server: Covering SQL Server 2005 and 2008 Review

A Developer's Guide to Data Modeling for SQL Server: Covering SQL Server 2005 and 2008
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"A Developers Guide to Data Modeling for SQL Server" is billed to be for all level of data modelling development, however it is written in a style targeted to beginning novice developers only, and never progresses very far beyond demonstrating the fundamentals of Data Modeling. For novices, it is extremely good resource, explaining highly technical concepts in an easy to understand non-technical language. However, for the experienced developer, it would be best to look elsewhere.

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10/11/2011

Semantic Web for the Working Ontologist: Effective Modeling in RDFS and OWL Review

Semantic Web for the Working Ontologist: Effective Modeling in RDFS and OWL
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There are maybe half a dozen or so books in my library that have defined the body of knowledge that has been the subject of my career. All the others are interesting (or not) but not the definitive description of the subject. It is very rare when a new one comes along. But when one does succinctly and clearly define and describe a subject area I have been struggling to master for several years, this is worth celebrating.

This is such a book. For the last several years, I have been studying OWL and the Semantic Web, recognizing that there is something there that is important. But it's been a struggle to get on top of it. For example, the books I've found so far (and indeed, the OWL specification itself) describes the language in terms of XML. That's ok, and I was able to understand bits and pieces of it. And I did get the fundamental difference between semantic modeling as done in OWL and semantic modeling as I have been doing with entity/relationship modeling. But I never really felt comfortable that I "got it".
This book, however, very clearly starts at the beginning and takes the reader through the steps required to understand not just the languages involved, but why they are important and why they are significant to the Semantic Web. Indeed this is the first time I can say that I really understand the semantic web.
One of the reviews complains that the book doesn't go far enough. Perhaps not. But if you are looking for a place not just to start your education and to get a through grounding in fundamental concepts, this is the book for you.
I strongly recommend this book.


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The promise of the Semantic Web to provide a universal medium to exchange data information and knowledge has been well publicized.There are many sources too for basic information on the extensions to the WWW that permit content to be expressed in natural language yet used by software agents to easily find, share and integrate information. Until now individuals engaged in creating ontologies-- formal descriptions of the concepts, terms, and relationships within a given knowledge domain-- have had no sources beyond the technical standards documents.Semantic Web for the Working Ontologist transforms this information into the practical knowledge that programmers and subject domain experts need.Authors Allemang and Hendler begin with solutions to the basic problems, but don't stop there:they demonstrate how to develop your own solutions to problems of increasing complexity and ensure that your skills will keep pace with the continued evolution of the Semantic Web. . Provides practical information for all programmers and subject matter experts engaged in modeling data to fit the requirements of the Semantic Web.. De-emphasizes algorithms and proofs, focusing instead on real-world problems, creative solutions, and highly illustrative examples. . Presents detailed, ready-to-apply "recipes" for use in many specific situations.. Shows how to create new recipes from RDF, RDFS, and OWL constructs.

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9/03/2011

Data Modeling and Database Design Review

Data Modeling and Database Design
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I had the chance to take a class taught by N. Umanath, one of the authors, with this as the text.
This was not the case of the textbook being the chosen text because the author wanted sales. It was an amazing opportunity to learn the subject as the author intend(s/ed) it to be taught. My view of the book may be skewed because it was taught by the author (so he could have made up for deficiencies in the book, it's hard to say). But overall I learned a ton of stuff in a very short period of time, and felt several times more knowledgeable and capable on the subject.
Very understandable and readable. A few things are somewhat non-traditional, but they make very good arguments for where they diverge from tradition, and I personally believe that many of those divergences should be adopted at an enterprise level. Specifically their model for logical schemas.


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Data Modeling and Database Design presents a conceptually complete coverage of indispensable topics that each MIS student should learn if that student takes only one database course. Database design and data modeling encompass the minimal set of topics addressing the core competency of knowledge students should acquire in the database area. The text, rich examples, and figures work together to cover material with a depth and precision that is not available in more introductory database books.

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