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  • Sub-Schemas in SQL Server 2005/2008

    - by Maushu
    This is a simple question yet I was unable to find any information at all about this. Is it possible to have sub-schemas in SQL Server 2005/2008? Example: Having a HR (Human Resources) schema with a sub-schema called Training (with tables related to this). It would end up like HR.Training.* where * would be the tables.

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  • How to add XML elements into the toolbox in Visual Studio 2010 RC

    - by Alex Marshall
    I'm trying to edit an XML schema in Visual Studio 2010 Ultimate RC, but when I go to the toolbox (with the schema open and focused) there's absolutely nothing in the Toolbox view, even when every tutorial out there that I've read tells me that there should be. I've tried using the context menu option for resetting the Toolbox to no effect. Is there something I'm missing ? Something I need to install to get this feature of Visual Studio going ?

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  • How to formulate a SQL Server indexed view that aggregates distinct values?

    - by Jeremy Lew
    I have a schema that includes tables like the following (pseudo schema): TABLE ItemCollection { ItemCollectionId ...etc... } TABLE Item { ItemId, ItemCollectionId, ContributorId } I need to aggregate the number of distinct contributors per ItemCollectionId. This is possible with a query like: SELECT ItemCollectionId, COUNT(DISTINCT ContributorId) FROM Item GROUP BY ItemCollectionId I further want to pre-calculate this aggregation using an indexed (materialized) view. The DISTINCT prevents an index being placed on this view. Is there any way to reformulate this which will not violate SQL Server's indexed view constraints?

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  • who convert flat file xml in biztalk server?

    - by Anish
    Hi, I am new to BizTalk server. So if this question is so obvious, plz forgive :( I have a flat file from one application, which i have to send to a biztalk server. In that case which component in my biztalk server converts my flat file to xml. Also I heard that I have to create an input schema(.xsd file), why i need an input message schema? Thanks in advance!

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  • FOSS version of SQLCompare or something similar?

    - by Scott
    Actually, free is good enough, it doesn't have to be open source :) I'm currently using the Schema Compare utility of VS2008, but it doesn't have a command line interface and has some other weaknesses as well. I'm wondering what free tools others are using to provide command line schema comparisons/synchronizations? Thanks.

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  • Rails uniqueness constraint and matching db unique index for null column

    - by Dave
    I have the following in my migration file def self.up create_table :payment_agreements do |t| t.boolean :automatic, :default => true, :null => false t.string :payment_trigger_on_order t.references :supplier t.references :seller t.references :product t.timestamps end end I want to ensure that if a product_id is specified it is unique but I also want to allow null so I have the following in my model: validates :product_id, :uniqueness => true, :allow_nil => true Works great but I should then add an index to the migration file add_index :payment_agreements, :product_id, :unique => true Obviously this will throw an exception when two null values are inserted for product_id. I could just simply omit the index in the migration but then there's the chance that I'll get two PaymentAgreements with the same product_id as shown here: Concurrency and integrity My question is what is the best/most common way to deal with this problem

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  • sqlalchemy date type in 0.6 migration using mssql

    - by nosklo
    I'm connection to mssql server through pyodbc, via FreeTDS odbc driver, on linux ubuntu 10.04. Sqlalchemy 0.5 uses DATETIME for sqlalchemy.Date() fields. Now Sqlalchemy 0.6 uses DATE, but sql server 2000 doesn't have a DATE type. How can I make DATETIME be the default for sqlalchemy.Date() on sqlalchemy 0.6 mssql+pyodbc dialect? I'd like to keep it as clean as possible. Here's code to reproduce the issue: import sqlalchemy from sqlalchemy import Table, Column, MetaData, Date, Integer, create_engine engine = create_engine( 'mssql+pyodbc://sa:sa@myserver/mydb?driver=FreeTDS') m = MetaData(bind=engine) tb = sqlalchemy.Table('test_date', m, Column('id', Integer, primary_key=True), Column('dt', Date()) ) tb.create() And here is the traceback I'm getting: Traceback (most recent call last): File "/tmp/teste.py", line 15, in <module> tb.create() File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/schema.py", line 428, in create bind.create(self, checkfirst=checkfirst) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1647, in create connection=connection, **kwargs) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1682, in _run_visitor **kwargs).traverse_single(element) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/sql/visitors.py", line 77, in traverse_single return meth(obj, **kw) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/ddl.py", line 58, in visit_table self.connection.execute(schema.CreateTable(table)) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1157, in execute params) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1210, in _execute_ddl return self.__execute_context(context) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1268, in __execute_context context.parameters[0], context=context) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1367, in _cursor_execute context) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1360, in _cursor_execute context) File "/home/nosklo/.local/lib/python2.6/site-packages/sqlalchemy/engine/default.py", line 277, in do_execute cursor.execute(statement, parameters) sqlalchemy.exc.ProgrammingError: (ProgrammingError) ('42000', '[42000] [FreeTDS][SQL Server]Column or parameter #2: Cannot find data type DATE. (2715) (SQLExecDirectW)') '\nCREATE TABLE test_date (\n\tid INTEGER NOT NULL IDENTITY(1,1), \n\tdt DATE NULL, \n\tPRIMARY KEY (id)\n)\n\n' ()

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  • validating wsdl/schema using cxf

    - by SGB
    I am having a hard time getting cxf to validate an xml request that my service creates for a 3rd party. My project uses maven. Here is my project structure Main Module : + Sub-Module1 = Application + sub-Module2 = Interfaces In Interfaces, inside src/main/resources I have my wsdl and xsd. so, src/main/resources + mywsdl.wsdl. + myschema.xsd The interface submodule is listed as a dependency in the Application-sub-module. inside Application sub-module, there is a cxsf file in src/maim/resources. <jaxws:client name="{myTargerNameSpaceName}port" createdFromAPI="true"> <jaxws:properties> <entry key="schema-validation-enabled" value="true" /> </jaxws:properties> </jaxws:client> AND:. <jaxws:endpoint name="{myTargetNameSpaceName}port" wsdlLocation="/mywsdl.wsdl" createdFromAPI="true"> <jaxws:properties> <entry key="schema-validation-enabled" value="true" /> </jaxws:properties> </jaxws:endpoint> I tried changing the "name="{myTargetNameSpaceName}port" to "name="{myEndPointName}port" But to no anvil. My application works. But it just do not validate the xml I am producing that has to be consumed by a 3rd party application. I would like to get the validation working, so that any request that I send would be a valid one. Any suggestions?

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  • how to get Contact database schema.

    - by kamiomar
    Dear, is there any link that provide me the Contact Schema. when i store new phone number in mobile, the informaion store in the database. so i need schema to create my own table for back purpose. i have alreay get People table column by the follwoing code. boolean displayFlag = false; String str = ""; Uri CONTACT_URI = People.CONTENT_URI; Cursor cursor = mContext.getContentResolver().query(CONTACT_URI, null, null, null, null); String columnNames = ""; if (cursor != null) { try { cursor.getCount(); if (cursor.moveToFirst()) { String[] columns = cursor.getColumnNames(); for (int i = 0; i < columns.length; i++) { columnNames += "colName" + cursor.getColumnName(i) + " : " + cursor.getString(i) + "colValue"; } } } finally { cursor.close(); } } createImage(columnNames); if (displayFlag) { Toast.makeText(mContext, str, Toast.LENGTH_SHORT).show(); } } Thanks

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  • how to design a schema where the columns of a table are not fixed

    - by hIpPy
    I am trying to design a schema where the columns of a table are not fixed. Ex: I have an Employee table where the columns of the table are not fixed and vary (attributes of Employee are not fixed and vary). Nullable columns in the Employee table itself i.e. no normalization Instead of adding nullable columns, separate those columns out in their individual tables ex: if Address is a column to be added then create table Address[EmployeeId, AddressValue]. Create tables ExtensionColumnName [EmployeeId, ColumnName] and ExtensionColumnValue [EmployeeId, ColumnValue]. ExtensionColumnName would have ColumnName as "Address" and ExtensionColumnValue would have ColumnValue as address value. Employee table EmployeeId Name ExtensionColumnName table ColumnNameId EmployeeId ColumnName ExtensionColumnValue table EmployeeId ColumnNameId ColumnValue There is a drawback is the first two ways as the schema changes with every new attribute. Note that adding a new attribute is frequent. I am not sure if this is the good or bad design. If someone had a similar decision to make, please give an insight on things like foreign keys / data integrity, indexing, performance, reporting etc.

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  • Database schema for a library

    - by ABach
    Hi all - I'm designing a library management system for a department at my university and I wanted to enlist your eyes on my proposed schema. This post is primarily concerned with how we store multiple copies of each book; something about what I've designed rubs me the wrong way, and I'm hoping you all can point out better ways to tackle things. For dealing with users checking out books, I've devised three tables: book, customer, and book_copy. The relationships between these tables are as follows: Every book has many book_copies (to avoid duplicating the book's information while storing the fact that we have multiple copies of that book). Every user has many book_copies (the other end of the relationship) The tables themselves are designed like this: ------------------------------------------------ book ------------------------------------------------ + id + title + author + isbn + etc. ------------------------------------------------ ------------------------------------------------ customer ------------------------------------------------ + id + first_name + first_name + email + address + city + state + zip + etc. ------------------------------------------------ ------------------------------------------------ book_copy ------------------------------------------------ + id + book_id (FK to book) + customer_id (FK to customer) + checked_out + due_date + etc. ------------------------------------------------ Something about this seems incorrect (or at least inefficient to me) - the perfectionist in me feels like I'm not normalizing this data correctly. What say ye? Is there a better, more effective way to design this schema? Thanks!

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  • Facebook style messaging system schema design

    - by Jamie
    Hi all, I'm looking to implement a facebook style messaging system (thread messages) into a site of mine. Do you think this schema markup looks okay? Doctrine schema.yml: UserMessage: tableName: user_message actAs: [Timestampable] columns: id: { type: integer(10), primary: true, autoincrement: true } sender_id : { type: integer(10), notnull: true } sender_read: { type: boolean, default: 1 } subject: { type: string(255), notnull: true } message: { type: string(1000), notnull: true } hash: { type: string(32), notnull: true } relations: UserMessageRecipient as Recipient: type: many local: id foreign: message_id UserMessageReply as Reply: type: many local: id foreign: message_id UserMessageReply: tableName: user_message_reply columns: id: { type: integer(10), primary: true, autoincrement: true } user_message_id as message_id: { type: integer(10), notnull: true } message: { type: string(1000), notnull: true } sender_id: { type: integer(10), notnull: true } relations: UserMessage as Message: local: message_id foreign: id type: one UserMessageRecipient: tableName: user_message_recipient actAs: [Timestampable] columns: id: { type: integer(10), primary: true, autoincrement: true } user_message_id as message_id: { type: integer(10), notnull: true } recipient_id: { type: integer(10), notnull: true } recipient_read: { type: boolean, default: 0 } When I a new reply is made,i'll make sure the boolean for "recipient_read" for each recipient is set to false and of course i'll make sure sender_read is set to false too. I'm using a hash for the URL: http://example.com/user/messages/aadeb18f8bdaea49882ec4d2a8a3c062 (As the id will be starting from 1, i don't wish to have http://example.com/user/messages/1. Yeah, I could start incrementing from a bigger number, but i'd prefer to start at 1.) Is this a good way to go about it? Your thoughts and suggestions would be hugely appreciated. Thanks guys!

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  • Handling Denormalized Schema with Eclipselink

    - by iamrohitbanga
    Hello All I have a denormalized table containing employee information. The fields are employee id, name and department name. The primary key is a composite one consisting of all three fields. An employee can belong to multiple departments. I want to read/write the objects in the table using the Eclipselink Dynamic Persistence API (which is infact a wrapper on top of JPA descriptors etc.). Example Data: 1 e1 dep1 2 e1 dep2 3 e2 dep1 4 e2 dep3 5 e3 dep1 5 e3 dep2 5 e3 dep3 A normal ReadAllQuery (select query) on the table returns a DynamicEntity corresponding to each row in the table. However I want to club all entities based on the emp id and return all the departments he belongs to as a list. I can merge the entities after retrieving them but if I can use some Eclipselink feature out of the box then it would be better. One way to do the read is the following: I create two dynamic types corresponding to employee: Having id,name as the primary key Having id, department as the primary key, I create a OneToManyMapping from the first type to the second one. Then when I query the first type it does return the departments to which employee belongs as a list of DynamicEntity of the second type. This satisfies the read scenario. Is there a better way of doing this? Is this inherently supported by Eclipselink or JPA? I cannot get the same dynamic type configuration working for the write scenario. This is because when I write the changes using the writeObject method of UnitOfWork, it generates insert queries which enter the following entries in the table id name department 102 emp_102 102 st 102 dep_102 102 dep_102 102 dep_102 instead of: id name department 102 emp_102 st 102 emp_102 dep_102 102 emp_102 dep_102 102 emp_102 dep_102 Is there any way I can get write to work with this schema using eclipselink? I want to avoid doing the heavy lifting of merging the rows for such a denormalized schema or generating each row before doing a write. Is there no clean way of doing this using Eclipselink or JPA? Thanks in Advance.

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  • Perl, LibXML and Schemas

    - by Xetius
    I have an example Perl script which I am trying to load and validate a file against a schema, them interrogate various nodes. #!/usr/bin/env perl use strict; use warnings; use XML::LibXML; my $filename = 'source.xml'; my $xml_schema = XML::LibXML::Schema->new(location=>'library.xsd'); my $parser = XML::LibXML->new (); my $doc = $parser->parse_file ($filename); eval { $xml_schema->validate ($doc); }; if ($@) { print "File failed validation: $@" if $@; } eval { print "Here\n"; foreach my $book ($doc->findnodes('/library/book')) { my $title = $book->findnodes('./title'); print $title->to_literal(), "\n"; } }; if ($@) { print "Problem parsing data : $@\n"; } Unfortunately, although it is validating the XML file fine, it is not finding any $book items and therefore not printing out anything. If I remove the schema from the XML file and the validation from the PL file then it works fine. I am using the default namespace. If I change it to not use the default namespace (xmlns:lib="http://libs.domain.com" and prefix all items in the XML file with lib and change the XPath expressions to include the namespace prefix (/lib:library/lib:book) then it again works file. Why? and what am I missing? XML: <?xml version="1.0" encoding="utf-8"?> <library xmlns="http://lib.domain.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://lib.domain.com .\library.xsd"> <book> <title>Perl Best Practices</title> <author>Damian Conway</author> <isbn>0596001738</isbn> <pages>542</pages> <image src="http://www.oreilly.com/catalog/covers/perlbp.s.gif" width="145" height="190"/> </book> <book> <title>Perl Cookbook, Second Edition</title> <author>Tom Christiansen</author> <author>Nathan Torkington</author> <isbn>0596003137</isbn> <pages>964</pages> <image src="http://www.oreilly.com/catalog/covers/perlckbk2.s.gif" width="145" height="190"/> </book> <book> <title>Guitar for Dummies</title> <author>Mark Phillips</author> <author>John Chappell</author> <isbn>076455106X</isbn> <pages>392</pages> <image src="http://media.wiley.com/product_data/coverImage/6X/07645510/076455106X.jpg" width="100" height="125"/> </book> </library> XSD: <?xml version="1.0" encoding="utf-8"?> <xs:schema xmlns="http://lib.domain.com" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://lib.domain.com"> <xs:attributeGroup name="imagegroup"> <xs:attribute name="src" type="xs:string"/> <xs:attribute name="width" type="xs:integer"/> <xs:attribute name="height" type="xs:integer"/> </xs:attributeGroup> <xs:element name="library"> <xs:complexType> <xs:sequence> <xs:element maxOccurs="unbounded" name="book"> <xs:complexType> <xs:sequence> <xs:element name="title" type="xs:string"/> <xs:element maxOccurs="unbounded" name="author" type="xs:string"/> <xs:element name="isbn" type="xs:string"/> <xs:element name="pages" type="xs:integer"/> <xs:element name="image"> <xs:complexType> <xs:attributeGroup ref="imagegroup"/> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:schema>

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  • Foreign keys with Rails' ActiveRecord::Migration?

    - by Earlz
    Hello, I'm new to Ruby on Rails (I know Ruby just decently though) and looking at the Migration tools, it sounds really awesome. Database schemas can finally (easily) go in source control. Now my problem with it. When using Postgres as the database, it does not setup foreign keys. I would like the benefits of foreign keys in my schema such as referential integrity. So how do I apply foreign keys with Migrations?

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  • PostgreSQL compare databases tool or generating migration script util

    - by opedge
    In our development we use two servers with PostgreSQL 8.4 - development and production. So, after changes were made on development server we would like to automatically generate SQL migration scripts. I found that EMS DB Comparer for PostgreSQL can do it, but it is only for Windows (our development team use Ubuntu for developing). Do you now alternative tools to do this?

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  • Hyper-V virtual machine can't be migrated to a specific host in the cluster

    - by Massimo
    I have a three-node Hyper-V cluster running on Windows Server 2008 R2 which is working quite flawlessly: there are no errors, live migration works, all hosts can and will happily run all virtual machines, and so on. But one specific virtual machinee is trying to make me go mad: it works on two nodes of the cluster, but not on the third one. Whenever I try to move the VM to that node, be it in a live migration or with the VM powered off, it always fails. In the event log of the host these events are logged: Source: Hyper-V-VMMS Event ID: 16300 Cannot load a virtual machine configuration: General access denied error (0x80070005) (Virtual machine ID <GUID>) Source: Hyper-V-VMMS Evend ID: 20100 The Virtual Machine Management Service failed to register the configuration for the virtual machine '<GUID>' at 'C:\ClusterStorage\<PATH>\<VM>': General access denied error (0x80070005) Source: Hyper-V-High-Availability Event ID: 21102 'Virtual Machine Configuration <VM>' failed to register the virtual machine with the virtual machine management service. All other VMs can be moved to/from the offending host, and the offending VM can be moved between the other two hosts. Also, this is not a storage problem, because there are other VMs in the same cluster volume, and the host has no troubles running them. What's going on here?

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  • Mass-migrating from POP3 to Exchange 2010, how do I copy mailboxes?

    - by Erik P. Skaalerud
    I'm in the process of planning our migration from an internal hosted POP3-server (dovecot) to Exchange 2010. We're using Outlook 2003 for the moment, but will soon upgrade to Outlook 2010. The big problem is that we have about 50 computers here in our HQ, plus ~30 clients in branch offices (wich will get their Exchange migration later sometime). I'm the only IT personel, and having to go around and manually set up Outlook and copy over their PST contents is not a option I'm looking for. Some users have set outlook to keep messages for X number of days on the POP3 server, others have not. Using a POP3 connector to transfer over the mails is not a viable option. Here is what I've done so far: Created a transform for the Office 2003 administrative installation point Created a .PRF file to modify any existing e-mail account to switch over to Exchange (including the RPC-encrypt hotfix described in MSKB 2006508) Tested both transform and PRF, both works Created a test-OU and GPO containing the Office 2003 installation with transform applied, also works My big question is: How can I force Outlook to import any existing .PST into the new Exchange mailbox when the user starts up Outlook for the first time after the MST/PRF have been applied? Is this possible?

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  • Oracle Internet Directory - Required Schemas already loaded

    - by Brandon Kreisel
    After a successful installation of Oracle Internet Directories (OID) I attemped to remove and re-install it with a different configuration. First I ran ./runInstaller.sh -deinstall from the OID middleware directory to uninstall. Then i ran the installer again but it complained on the Specify Schema Database step. Upon connecting to the database, the installer threw: INST-5174: Required schemas are already loaded in the specified database. I connected to the target database and removed the OID schemas I knew of SQL> drop user ODS cascade; SQL> drop user ODSSM cascade; That didn't not work and the error still appears. What steps am I missing? Note: The Database is 11g and it was brand new before installing OID so there is no other data select * from all_users doesn't show any other schemas related to OID from what I can tell, the latest user creation date is OCT 2010

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  • Exchange migration to 2007 making Outlook 2003 unable to read meeting requests

    - by Kvad
    Hi, We are currently moving from Exchange 2003 to 2007 (8.2 build 176.2). We have encounted an issue with one user. In Outlook 2003 when getting a meeting request: "Can't open this item. Could not complete the operation. One or more parameter values are nto valid." The item cannot be previewed in the reading pane either. The item can be viewed in OWA and iPhone fine. I've tried with cache mode off and on. Different computers. Same issue. There are the following entries on the account: SMTP [email protected] [email protected] X400 C=AU;A= ;P=Company Name;O=Exchange;S=LastName;G=FirstName; I'm loathe to recreate the account. This will be an extreme last resort. Any ideas? Thanks in advance.

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  • Google privacy concerns: trustworthy alternatives for migration?

    - by Markos Fragkakis
    I have come to realize the tremendous amount of information Google has on its users. I am a typical Google user, using Gmail, Google Reader. This means that right now Google now has the following information at its disposal: Who my friends are (Gmail) What we talk about (Gmail, Google Talk) What news sources I follow (Google Reader) How frequently I check them and which ones I consider important enough to share (Google Reader) A lot of other stuff What I search about and when (if I search when logged in) (Web search) I have no reason to believe that this information is used for reasons other than adjusting what ads I am displayed when I visit a site with Google Ads. However, I have realised that I am in no position to be certain that this is absolutely true, or that it always will be. On the other hand, I don't want to reach the uber-privacy-maniac state of maintaining my own email server and installing a desktop RSS reader in all my machines. So, I am asking for your opinions: What services constitute a good set of alternatives to the Google services, promising better privacy? Pros: Privacy Free Powerful Usable

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