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  • relational databases and multicast messages

    - by xRobot
    I have read that relational databases are a terrible way to do multicast messages like twitter. So twitter saves every tweet only one times and then retrieve its in every stream ? or saves every tweet in every users's stream ? I want to know why relational database ( like mysql or postgresql ) doesn't good for twitter-like application.

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  • django forms- register user script

    - by itsandy
    Hi all, I want to make something like http://www.djangosnippets.org/accounts/register/ using django..the register form. I am new to django. i have made a simple view form using django forms but unable o understand how to connect my form to a database. Im using postgresql. is there an easy way to use some snippet or script to achieve this. Please Help

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  • index 'enabled' fields good idea?

    - by sibidiba
    Content of a website is stored in a MySQL database. 99% of the content will be enabled, but some (users, posts etc.) will be disabled. Most of the queries end as WHERE (...) AND enabled Is it a good idea to create an index on the field 'enabled'?

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  • Meaning of Primary Key to Microsoft SQL Server 2008

    - by usr
    What meaning does the concept of a primary key have to the database engine of SQL Server? I don't mean the clustered/nonclustered index created on the "ID" column, i mean the constraint object "primary key". Does it matter if it exists or not? Alternatives: alter table add primary key clustered alter table create clustered index Does it make a difference?

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  • Are GUID primary keys bad in theory, or just practice?

    - by Yarin
    Whenever I design a database I automatically start with an auto-generating GUID primary key for each of my tables (excepting look-up tables) I know I'll never lose sleep over duplicate keys, merging tables, etc. To me it just makes sense philosophically that any given record should be unique across all domains, and that that uniqueness should be represented in a consistent way from table to table. I realize it will never be the most performant option, but putting performance aside, I'd like to know if there are philosophical arguments against this practice?

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  • The Next-gen Databases

    - by Randin
    I'm learning traditional Relational Databases (with PostgreSQL) and doing some research I've come across some new types of databases. CouchDB, Drizzle, and Scalaris to name a few, what is going to be the next database technologies to deal with?

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  • What are the reasons *not* to use a GUID for a primary key?

    - by Yarin
    Whenever I design a database I automatically start with an auto-generating GUID primary key for each of my tables (excepting look-up tables) I know I'll never lose sleep over duplicate keys, merging tables, etc. To me it just makes sense philosophically that any given record should be unique across all domains, and that that uniqueness should be represented in a consistent way from table to table. I realize it will never be the most performant option, but putting performance aside, I'd like to know if there are philosophical arguments against this practice?

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  • Recommended book for Sql Server query optimisation

    - by Patrick Honorez
    Even if I have made a certification exam on Sql Server Design and implementation , I have no clue about how to trace/debug/optimise performance in Sql Sever. Now the database I built is really business critical, and getting big, so it is time for me to dig into optimisation, specially regarding when/where to add indexes. Can you recommend a good book on this subject ? (smaller is better :) Just in case: I am using Sql Server 2008. Thanks

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  • What's wrong with foreign keys?

    - by kronoz
    I remember hearing Joel mention in the podcast that he'd barely ever used a foreign key (if I remember correctly). However, to me they seem pretty vital to avoid duplication and subsequent data integrity problems throughout your database. Do people have some solid reasons as to why (to avoid a discussion in lines with SO principals)? Edit: "I've yet to have a reason to create a foreign key, so this might be my first reason to actually set up one."

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  • Object Oriented vs Relational Databases

    - by Dan
    Objects oriented databases seem like a really cool idea to me, no need to worry about mapping your domain model to your database model, no messing around with sql or ORM tools. The way I understand it, relational DBs offer some advantages when there is massive amounts of data, and searching an indexing need to be done. To my mind 99% of websites are not massive, and enterprise issues never need to be thought about, so why arn't OO DBs more widely used?

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  • How do I update the members of a MySQL SET Type?

    - by MachinationX
    I have a table of values, with one of the columns being of type SET. If it currently has the members ('a', 'b', 'c', 'd'), how do I add 'e' to the possible values? I realize that using a SET type is a little strange, and I'm unclear why one would use it instead of a foreign key to another table with the values of the set, but I didn't design the database in question, and can't change it that much. Thanks for your help!

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  • methods of joining 2 tables without using JOIN or SELECT more than one distinct table in the query

    - by GB_J
    Is there a way of joining results from 2 tables without using JOIN or SELECT from more than one table? The reason being the database im working with requires queries that only contain SELECT, FROM, and WHERE clauses containing only one distinct table. I do, however, need information from other tables for the project i'm working on. More info: the querier returns the query results in a .csv format, is there something we can manipulate there?

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  • Il CRM è al passo con i tempi?

    - by antonella.buonagurio(at)oracle.com
    Il Social Customer Relationship Management è nato grazie alla rivoluzione portata dal Web 2.0, un cambiamento epocale nelle modalità di comunicazione che ha aggiunto una incredibile ricchezza alle conversazioni tra aziende e consumatori. Le aziende dispongono adesso di strumenti per comprendere il proprio mercato senza precedenti, i consumatori, a loro volta, hanno il potere di utilizzare nuovi canali per esprimere le proprie esigenze e per comunicare e condividere commenti ed esperienze. Ma il Web 2.0 non è il solo fattore che impatta sulle scelte strategiche in ambito CRM  che ogni azienda deve considerare per sostenere  questo nuovo rapporto con i propri consumatori.    Vuoi scoprire quali sono le forze (o fattori) che le aziende devono considerare affinchè i processi di gestione della relazione con i clienti stiano al passo con le mutate condizioni sociali ed economiche?   Per saperne di più:   Il whitepaper realizzato da Oracle, Paul Gillin ed  IT Business Edge  ne delinea alcuni: 1.      Il Business. Come è cambiato in funzione dell'esperienza multicanale ora possible, della centralità del cliente e dei social networking che dominano le relazioni on line? 2.      La tecnologiaLe aziende oggi per guadagnare vantaggio competitivo devono dotarsi delle più innovative tecnologie per dare maggior valore al proprio business e per ridurre al minimo i costi di infrastruttura. Quali sono e quali sono gli effettivi vantaggi?   e altri ancora ...... leggendo il white paper "Is your CRM solution keeping up with the times?"

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  • New User of UPK?

    - by [email protected]
    The UPK Developer comes with a variety of manuals to help support your organization in the development and deployment of content. The Developer manuals can be found in the \Documentation\Language Code\Reference folder where the Developer has been installed. As of 3.5.x the documentation can also be accessed via the Start menu, Start\Programs\User Productivity Kit\Documentation\Reference. Content Deployment.pdf: This manual provides information on how to deploy content to your audience. Content Development.pdf: This manual provides information on how to create, maintain, and publish content using the Developer. The content of this manual also appears in the Developer help system. Content Player.pdf: This manual provides instructions on how to view content using the Player. The content of this manual also appears in the Player help system. In-Application Support Guide.pdf: This manual provides information on how implement content-sensitive, in-application support for enterprise applications using Player content. Installation & Administration.pdf: This manual provides instructions for installing the Developer in a single-user or multi-user environment as well as information on how to add and manage users and content in a multi-user installation. An Administration help system also appears in the Developer for authors configured as administrators. This manual also provides instructions for installing and configuring Usage Tracking. Upgrade.pdf: This manual provides information on how to upgrade from a previous version to the current version. Usage Tracking Administration & Reporting.pdf: This manual provides instructions on how to manage users and usage tracking reports. - Kathryn Lustenberger, Oracle UPK Outbound Product Management

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  • The Importance of Collaboration, Analytics, and Mobile Technologies for Modern HR

    - by HCM-Oracle
    It was 17 years ago, when a McKinsey study uncovered the “war for talent”. Today, it is no point of contention that a strong talent-centric strategy maybe the most important focus for organizations. A talent-centric organization aims at recruiting, retaining and developing the best talent.  The best employees will be able to adapt responsibilities and be able to come up with solutions to solve problems, which are important skills in today’s dynamic work environment, and arguably more important in this recessionary climate.   The notion of hiring and retaining talented employees for organizational sustainability and competitive advantage is not a new concept. But can organizations consider themselves as having a “talent-centric” strategy without up-to-date collaboration tools, HR analytics and mobile technologies in pursuit of attracting, hiring and retaining the best talent? Attend the Upcoming Webcast A webcast on June 19th at 3pm EST will reveal more results of the study. Based on original research done in collaboration between Oracle HCM and HCI, we unveil new findings that explore how critical collaboration, analytic insights and mobile technology are for supporting a talent-centric work environment. You will learn: What are the benefits to being talent-centric? How does collaboration via social networks, analytics with predictive insights and mobile technologies support the talent-centric strategy of an organization? What is the state of play for these technologies? Register Here 

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  • Come integrare in modo smart processi di vendita e produzione?

    - by Claudia Caramelli-Oracle
    L’innovazione tecnologica ha trasformato il modo in cui i clienti interagiscono con le aziende. Inoltre, gli attuali scenari di mercato richiedono attenzione ed efficacia nella vendita per mantenere massima competitività. Per ottenere le migliori performance di vendita è necessario accelerare e automatizzare i processi di scambio informazioni tra i dipartimenti commerciali e produttivi, minimizzando tempi di attesa per ottenere dati tecnici e autorizzazioni alla fattibilità, riducendo i colli di bottiglia e i possibili errori umani attraverso un processo di controllo e omologazione dell’offerta.Gli sponsor dell’evento ti attendono l'11 giugno presso la prestigiosa sede dell’Unione Industriale di Torino per scoprire come: Ridurre il ciclo di vendita, facendo efficienza sull’intero processo di vendita Minimizzare gli impatti da turnover del personale di vendita Migliorare il value to promise Ottenere una migliore fidelizzazione e soddisfazione dei propri clienti, riducendone lo switching Assistere dal vivo ad una dimostrazione pratica di Oracle, leader mondiale nell’ambito delle soluzioni di CPQ (Configure, Price and Quoting) nell’utilizzo di uno strumento veloce, facile da utilizzare, che permetta una gestione smart della configurazione commerciale dell’offerta B2B anche con l’ausilio di accesso mobile e cruscotti direzionali. Scoprire come altre aziende abbiano adottato con successo queste soluzioni di business. La partecipazione all'evento è gratuita ma con capienza limitata, iscriviti subito per assicurarti la partecipazione: CLICCA QUI per registrarti. Se hai bisogno di maggiori informazioni scrivi a Silvia Valgoi.

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  • Hosted EBS 11i Integration Repository Temporarily Offline

    - by Steven Chan (Oracle Development)
    Most developers know that they can integrate their external applications with the E-Business Suite via the business service interfaces and SOA service endpoints documented in the E-Business Suite's Integration Repository.  This is shipped as part of EBS 12.  Until recently, it was provided as a hosted environment on the Oracle.com domain for EBS 11i. Unfortunately, we identified some standards-related issues in the process of switching from the existing server that hosts the EBS 11i environment to a new one, notably in the area of accessibility. Some of those issues will require coding changes to resolve.  Given our focus on EBS 12.2 right now, it may take some time to prioritize this relative to our other existing commitments. In the meantime, we are required to suspend access to the EBS 11i Integration Repository.  I don't have a firm schedule for getting this back online yet, but you're welcome to monitor or subscribe to this blog. I'll post updates here as soon as soon as they're available.    Related Articles Integration Repository for the E-Business Suite New Whitepaper: Primer on Integrating with EBS 12 with Other Applications

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  • How to start WebLogic Server using default scripts?

    - by Luz Mestre-Oracle
    There are a few common issues reported when starting weblogic server using scripts. 1. User is not able to access weblogic console. 2. After a few days/hours weblogic server stops abruptly. 3. When user closes putty, they are not able to connect to weblogic server anymore. 4. When user closes windows command prompt, they are not able to connect to weblogic server anymore. 5. Weblogic is started using startManagedWebLogic.cmd/startManagedWebLogic.sh. By default, WebLogic Server does not run in background mode, so after you close the window the process finishes as well. In Linux/Unix based platforms, you need to use: nohup ./startManagedWebLogic.sh <Server> <URL> & In Windows platforms, you need to start Managed Servers using Windows Services: How to Install MS Windows Services For FMW 11g WebLogic Domain Admin and Managed Servers (Doc ID 1060058.1) http://docs.oracle.com/cd/E23943_01/web.1111/e13708/winservice.htm There a few more reasons that could cause similar symptoms, like JVM crash, signals sent by the Operating System, and many other reasons.  But the above steps is the first one to start. Enjoy!

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  • Social Media Stations for Partners

    - by Oracle OpenWorld Blog Team
    By Stephanie Spada One of our exciting additions to this year’s Oracle Partner Network Exchange @ OpenWorld are Social Media Stations.  Partners have the opportunity to get customized, face-to-face expert advice on how they can better engage their customers and find new prospects online using social media tools.When: Sunday, September 30Time: 3:00 p.m.–5:00 p.m.Where: Moscone South, Esplanade levelWhen: Monday, October 1Time:  9:30 a.m.–6:00 p.m.Where: Moscone South, OPN Lounge, Exhibitor levelEach customized social media consultation will take only 25 minutes. Here’s how it works:·    Partners check in with a Social Media Rally coordinator who will assess needs and make the right connections for each session·    Partners go to the Photo Station, where a headshot will be taken that can be used on social profiles, Websites or for articles and posts across the Web·    Partners meet with the One-2-One consultants who will walk them through how they’re using social media today and what next steps could beSocial media channels/methods discussed can include Google+, Google Alerts, Google Analytics, Facebook, LinkedIn, Search Engine Optimization, Twitter, and more.  With so many choices, partners can decide how to focus their time.To get the most out of the Social Media Stations, partners should:·    Wear appropriate attire for the headshot photo·    Bring log-in information for social platforms they want to discuss·    Come prepared with questions for the One-2-One consultation so session time can be maximizedFor questions, or to schedule a session ahead of time, partners should send an email to: [email protected].

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  • Procurement and E-Business Suite Product Analyzers .. Can you use this tool to resolve your SR?

    - by LindaJ-Oracle
    Procurement and E-Business Suite Product Analyzers (Doc ID 1545562.1). Analyzers are Query/Read only tools with easy to read html output. The tools are delivered by EBS Support via My Oracle Support documents ids for ease of use. The Analyzer scripts are meant to be part of your Production maintenance program by your Sysadmin, or to designated end users. The result set is an easy to read html output that provides recommendations, solutions and early warnings to of items that should be reviewed and correct. Each analyzer can be ran on demand or scheduled for repeatability and emailed to critical reviewers. There are several Analyzers available for E-Business Suite Applications Technology Group, Financials, and Manufacturing including some of the following topics.  Review them all at (Doc ID 1545562.1). Workflow Concurrent Processing Clone Log Parser Utility (Rapid Clone) Invoices, Payments, Accounting, Suppliers and EBTax Validate Data before Period Close EBTax Setup Payables Trial Balance Internet Expenses AutoInvoice Post-Process ASCP Performance PO Approval iProcurement Items For the Procurement specific Analyzers access them directly at: R12 IP Item Analyzer Diagnostic Script (Doc ID 1586248.1) R12: PO Approval Analyzer Diagnostic Script (Doc ID 1525670.1)

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  • If we make a number every millisecond, how much data would we have in a day?

    - by Roger Travis
    I'm a bit confused here... I'm being offered to get into a project, where would be an array of certain sensors, that would give off reading every millisecond ( yes, 1000 reading in a second ). Reading would be a 3 or 4 digit number, for example like 818 or 1529. This reading need to be stored in a database on a server and accessed remotely. I never worked with such big amounts of data, what do you think, how much in terms of MBs reading from one sensor for a day would be?... 4(digits)x1000x60x60x24 ... = 345600000 bits ... right ? about 42 MB per day... doesn't seem too bad, right? therefor a DB of, say, 1 GB, would hold 23 days of info from 1 sensor, correct? I understand that MySQL & PHP probably would not be able to handle it... what would you suggest, maybe some aps? azure? oracle? ... Thansk!

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