Coherence as like data access

hi
is coherence as like data access for toplink?
if is possible , how configue for toplink without database?
thanks

When I click that I get a page saying:
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Similar Messages

CoreServicesUIAgent would like to access your calendar data

Hi all,
three days ago, I received a strange Mavericks pop-up: "CoreServicesUIAgent would like to access your calendar data".
Then I went to the Security PrefPane, and saw CoreServicesUIAgent clicked.
Strange, so I decided to unclick, although I checked within the CoreServices folder that is was still an App by Apple.
Apparently no change at all.
However, everytime I change an event in iCal on a googlemail calendar account, it will not appear in iCal anymore.
Through Google Calendar webview, I can still see it, but not in iCal anymore.
And I can still see it on my iPhone.
So I disabled the calendar in iCal through the Internet Accounts settings, rebooted, clicked back on "CoreServiceUIAgent" in the Security PrefPane, rebooted, enabled the calendar back in iCal.
No change.
Some questions now:
- where could I find the preference file associated to Security (in order to check whether the "CoreServicesUIAgent" listed in the PrefPane is indeed refering to the Apple App inside the CoreServices folder)?
- why is CoreServiceUIAgent trying to get access to my calendar?
- why did it suddenly appear and not before?
- why is iCal such a pain now with Google Calendars?
Any help would be much appreciated ...

I have been havig trouble with iCal repeatedly prompting me to add a new event on its own. Recently to try and fix this I deleted my calendars, preferences and caches. I then picked up my calendars from iCloud. Within about an hour of running iCal again, I get this prompt to allow CoreServicesUIAgent.app access to my calendar. I said yes and almost immediately I get one of these unwanted add new event dialogs again. Ah hah I think.
I have been unable to find out what CoreServicesUIAgent.app does and why it needs access to my calendar, but it does seem to be the source of my unwanted automatic adding of new events issue. I went into the Security and Privacy Setting and disabled CoreServicesUIAgent.app access to my calendar. I am now waiting to see if I get any more of those unwanted adding new event prompts. If I can't detect any loss of functionality, I will just not give CoreServicesUIAgent.app access to my calendar.

Hi, I am bringing my verizon iPad air to Brazil later this month and would like to access cellular data. How do I do that? Thanks in advance.

Hi I am bringing my verizon iPad air to Brazil later this month and would like to access cellular data. How do I do that? I understand there is something about swapping or disabling sim cards, but I am a little unclear and verizon was no help. Thanks for your help in advance.

You must have Verizon unlock the device from their service. In Brazil you will have to find a compatible provider and use their SIM in place of Verizon's SIM

I don't have the up to date system requirements to run iCloud on my mac but would still like to access my email on my mac. I think I need to update my settings, but am not sure what to do. Can anyone help. thanks

I don't have the up to date system requirements to run iCloud on my mac but would still like to access my email on my mac. I think I need to update my settings, but am not sure what to do. Can anyone help. thanks

Welcome to the Apple Community.
If you haven't done so already you need to migrate your mail account to iCloud first and do so IMMEDIATELY at the website Move
Then
Delete your mail account from Mail preferences and set it up again using the Mail Server Information.
Some users have apparently encountered issues using this information in pre-Lion set ups (I haven't), Roger Wilmut has kindly provided instructions for those who find themselves with this problem.
Entering iCloud email settings manually in Snow Leopard or Leopard
Entering iCloud email settings manually in Tiger

Data Access Library for Oracle like Microsoft Ent Library

Hi there
Is there a plan to create a data access library over the odp.net providers
like the Microsoft Enterprise Library.
For people who have been using Microsoft Enterprise Library for sometime.
The coding examples pasted here on the Oracle website looks newbie and lengthy.
Accessing the provider via a library would
- reduces the amount of code that developers must write
- reduces the need to write boilerplate code to perform standard tasks
- reduces difficulties in changing the database type
As the Microsoft Enterprise Library Team is not keen in implementing odp.net into
the data access code.
Is there anything you guys can do.
It would lot better to have the same library to access Sql Server and Oracle database that way
Thanks
Martin A

You will have to roll your own for ODP.NET
Looking through the source for the Microsoft Enterprlise Library, you use the System.Data.OracleClient as an example.
It can be found here: [EntLibSrc Location]\App Blocks\Src\Data\Oracle\
You can also look at the Enterprise Library Contrib (http://www.codeplex.com/entlibcontrib) which provides community contributions to MEL - there is an open issue for ODP.NET, found here:
http://www.codeplex.com/entlibcontrib/WorkItem/View.aspx?WorkItemId=3167

How to get Current Log in BO user name in data access driver

In universe, to get the current log in user is via @Variable('BOUSER').
Right now, I need to be able to get the user name in the data access driver. I am writing a customized data access driver because we need to patch some where clause on the the query generated by the universe based on the logged-in user info. I only think of using end_sql parameter or adding an universe level filter to patch the @Variable('BOUSER') to the query, which would not work if user want to use customized query.
Can anyone tell me how to get currentBO user name from connection server ? or how @Variable('BOUSER') is translated into the logged-in user name in the universe?

Shweta,
The link you provided was the Auditor guide for BO 6.x, I'm not sure it that is going to help Karen or not.
Karen,
There is function called connection
(usage: =connection([Query Name]), where [Query Name]
denotes the name of the tab for the query under Edit Query)
Here is some of the output from connection:
4;ODBC18;MS SQL Server 2000166; VERSION=7; USER=xxxxx;
PASSWORD=; DBTYPE=Relational; DATABASE=xxx_xxxx;
ODBC_USER=xxxxxx; ODBC_PASSWORD=; BO_DSN=xxxx_xxxx;
BO_DRV_CONNECT_MODE=0; 224; VERSION=6; Name=xxxxx; Shared=4;
LoginTimeout=600; Timeout=600; Pool Time=60; Array Fetch Size=10;
Array Bind Size=5; RecommendedLenTransfert=1000; Password_Encryption=x;
AliasTable=; MeasureDimension=; Hint=; ConnectInit=; ArrayFetch=1;
I'm not sure if this info helps out either, being that connection provides info on a post-processing basis and it sounds like you need to get out ahead of the SQL generation. The @variable('bouser') would seem like the place to be, however, in allowing custom SQL to take place you loose the bouser due to an individual could customize the SQL to the point that it gets unwantingly yanked out. The end_sql might be your answer...
Thanks,
John

Database access code in objects constructor, or in data access object

Given an object that is stored in a database, is it better to have the database access code in a constructor method, or a data access layer object? E.g. I have a Person class
public class Person{
int Id;
String name;
int age;
}When I want to read a person's details from the database, I could use a constructor something like this:
public Person(int id){
Connection con = getDatabaseConnection();
ResultSet rs = con.createStatement().executeQuery("Select name, age from person where person_id = " + id);
rs.next();
this.name = rs.getString(1);
this.age=rs.getInt(2);
}Or I could use a method in a data access object :
public Person getPerson(int id){
Person p = new Person();
Connection con = getDatabaseConnection();
ResultSet rs = con.createStatement().executeQuery("Select name, age from person where person_id = " + id);
rs.next();
p.setName(rs.getString(1));
p.setAge(rs.getInt(2));
return p;
}It seems to me that the constructor approach has two advantages
(1) the SQL code is kept in the relevant class (so if I want to add a field to Person, I only have to make changes to the Person class)
(2) I don't have to have a setter method for each field
Is one or other of these ways generally recognized as 'best practise'?

malcolmmc wrote:
But then, on the other hand, everytime a Person gains a new field that's two places you have to change it. if the persistence interface is written in terms of the object and uses ORM, I don't have to touch the implementation. all i have to do is update the object, the database, and the mapping - just like you and your home brew ORM.
besides, so what? i'd fear the resource leak, bad layering, more difficult testing more.
Actually lately I've used annotations to label setters with database field names and run a simple home brew ORM to convert rows into objects even when not using a more complex persistence manager.home brew ORM? why is that necessary when you can choose from hibernate, ibatis, jdo, jpa, etc.? that's just nuts.
%

Urgent: how to really seperate business logic class from data access class

Hello,
I've this problem here on my hand and i really need help urgently. so please allow me to thank anyone who replies to this thread =)
Before i go any futhur, let me present a scenario. this will help make my question clearer.
"A user choose to view his account information"
here, i've attempted to do the following. i've tried to seperate my application into 3 layers, the GUI layer, the business logic layer, and the data access layer.
classically, the GUI layer only knows which object it should invoke, for example in the case above, the GUI would instantiate an Account object and prob the displayAcctInfo method of the Account object.
here is how my Account class looks like:
public class Account
private acctNo;
private userid;
private password;
private Customer acctOwner;
the way this class is being modelled is that there is a handle to a customer object.
that being the case, when i want to retrieve back account information, how do i go about retrieveing the information on the customer? should my data access class have knowledge on how the customer is being programmed? ie setName, getName, setAge, getAge all these methods etc? if not, how do i restore the state of the Customer object nested inside?
is there a better way to archieve the solution to my problem above? i would appriciate it for any help rendered =)
Yours sincerely,
Javier

public class AccountThat looks like a business layer object to me.
In a large application the GUI probably shouldn't ever touch business objects. It makes requests to the business layer for specific information. For example you might have a class called CustomerAccountSummary - the data for that might come entirely from the Account object or it might come from Account and Customer.
When the GUI requests information it receives it as a 'primitive' - which is a class that has no behaviour (methods), just data. This keeps the interface between the GUI and business layer simple and makes it easier to maintain.
When using a primitive there are four operations: query, create, update and delete.
For a query the gui sets only the attributes in the primitive that will be specifically queried for (or a specialized primitive can be created for this.) The result of a query is either a single primitive or a collection of primitives. Each primitive will have all the attributes defined.
For a create all of the attributes are set. The gui calls a method and passes the primtive.
For an update, usually all fields are defined although this can vary. The gui calls a method and passes the primitive.
For a delete, only the 'key' fields are set (more can be but they are not used.) The gui calls a method and passes the primitive.
Also keep in mind that a clean seperation is always an idealization. For example verify that duplicate records are not created is a business logic requirement (the database doesn't care.) However, it is much easier and more efficient to handle that rule in the database rather than in the business layer.

Multi user application control data access

Dear all,
i am using Oracle Developer Suite 10g and database 10g, windows xp plate form.
i want to develop multi user application regarding education.
i have two questions.
1. i take a start from creating an HR database which have 30 tables.
this database has 10 users.
the users will log on from their own schema.
how they will access the HR schema?
should i create a public synonym for each table in the HR Schema?
or should i create a view for each table in each user schema?
or should i grant select,insert,update etc to each user on HR schema?
2. i want to control the data access for each user.
i.e. every student could access his own academic record. each teacher access his own related record, the manager the owner and so on.
how to accompolish this task? oracle roles are not sufficient for this purpose.
Your help is highly appriciated.

How about you start with the basic stuff, like the 2 days developers guide:
http://www.oracle.com/pls/db112/to_toc?pathname=appdev.112/e10766/toc.htm
and make it to the advanced developers guide:
http://docs.oracle.com/cd/E11882_01/appdev.112/e25518/toc.htm
and work your way through the concepts manual:
http://www.oracle.com/pls/db112/to_toc?pathname=server.112/e25789/toc.htm
and everything else which sounds interesting to you in here:
http://www.oracle.com/pls/db112/portal.portal_db?selected=5&frame=
As for your first question this should be covered here:
http://docs.oracle.com/cd/E11882_01/network.112/e16543/authorization.htm#BABHFJFJ
i want to control the data access for each user.This is also documented:
http://docs.oracle.com/cd/E11882_01/network.112/e16543/vpd.htm#CIHBAJGI
cheers

Unable to connect to the Data Access service for this management server

Hate to raise a sleeping horse but was hoping someone might have some insight into why SCOM Report Server install is failing. I am using a domain account for SCOM 2012 R2 services in a distributive environment
with 2 management servers and 2 SQL servers…one for Ops db and one for DW db.
Install was failing on selecting the management server. Research led me to
Kevin Holman's site. I followed his doc and SPN are set per your config and can telnet to MGMT1 on 5723…firewall is off on all servers. I am a domain admin and scom.mgmt account (MSOMSdkSvc) is a local admin on the MGMT servers.
>setspn -l domain\scom.mgmt
Registered ServicePrincipalNames for CN=scom.mgmt,OU=Service Accounts,DC= domain,DC=net:
MSOMSdkSvc/SCOM-MGMT1
MSOMSdkSvc/SCOM-MGMT1.domain.net
MSOMSdkSvc/SCOM-MGMT2
MSOMSdkSvc/SCOM-MGMT2.domain.net
>setspn -l domain\scom-mgmt1
Registered ServicePrincipalNames for CN=SCOM-MGMT1,OU=SCOM,OU=INTERNAL,DC=domain,DC=net:
MSOMHSvc/SCOM-MGMT1.domain.net
TERMSRV/SCOM-MGMT1.domain.net
WSMAN/SCOM-MGMT1.domain.net
RestrictedKrbHost/SCOM-MGMT1.domain.net
HOST/SCOM-MGMT1.domain.net
MSOMHSvc/SCOM-MGMT1
TERMSRV/SCOM-MGMT1
WSMAN/SCOM-MGMT1
RestrictedKrbHost/SCOM-MGMT1
HOST/SCOM-MGMT1
>setspn -l domain\scom-mgmt2
Registered ServicePrincipalNames for CN=SCOM-MGMT2,OU=SCOM,OU=INTERNAL,DC=domain,DC=net:
MSOMHSvc/ SCOM-MGMT2.domain.net
MSOMHSvc/ SCOM-MGMT2
WSMAN/SCOM-MGMT2.domain.net
WSMAN/SCOM-MGMT2
        TERMSRV/SCOM-MGMT2.domain.net
TERMSRV/SCOM-MGMT2
RestrictedKrbHost/SCOM-MGMT2
HOST/CHH-SCOM-MGMT2
RestrictedKrbHost/CHH-SCOM-MGMT2.osi-asp.net
HOST/CHH-SCOM-MGMT2.osi-asp.net
>setspn -l domain\scom-ssrs
Registered ServicePrincipalNames for CN=SCOM-SSRS,OU=SCOM SQL,OU=SCOM,OU=CHH-INTERNAL,DC=domain,DC=net:
    WSMAN/SCOM-SSRS
WSMAN/SCOM-SSRS.domain.net
MSSQLSvc/SCOM-SSRS.domain.net
MSSQLSvc/SCOM-SSRS.domain.net:1433
    TERMSRV/SCOM-SSRS.domain.net
TERMSRV/SCOM-SSRS
RestrictedKrbHost/SCOM-SSRS
  HOST/SCOM-SSRS
RestrictedKrbHost/SCOM-SSRS.domain.net
HOST/SCOM-SSRS.domain.net
When I point to the MGMT server, I keep getting “Unable to connect to the Data Access service for this management server. Ensure the Data Access service is running and that the service, the management group, and setup are
all the same version”.
OpsMgrSetupWizard.log states…
Info:
:Could not connect to Management Server: scom-mgmt1.domain.net with exception: Threw Exception.Type: System.ArgumentException, Exception Error Code: 0x80070057, Exception.Message: Version string portion was too short or
too long.
Info:
:StackTrace:   at System.Version.TryParseVersion(String version, VersionResult& result) at System.Version..ctor(String version) at Microsoft.EnterpriseManagement.OperationsManager.Setup.Common.SetupHelpers.IsManagementServerCurrentVersion(String
managementServer) at Microsoft.EnterpriseManagement.OperationsManager.Setup.Common.SetupHelpers.CanConnectToManagementGroup(String managementServer)
When I searched on "Exception.Message: Version string portion was too short or too long" it led me to .Net strings in the reg. i deleted all refs to older versions (3.x) but still no good.
Bob

Well, I’m back to trying to get SCOM Report Server up and running. This time I decided to try the command line silent install and rely on logs to debug. But it still fails.
This is the script: SETUP /install /InstallPath:D:\Program Files\Microsoft System Center 2012 R2\Operations Manager /components:OMReporting /ManagementServer:<server>.<domain> /SRSInstance:<instance> /DataReaderUser:<domain>\<account>
/DataReaderPassword:******** /SendODRReports:0 /UseMicrosoftUpdate:0 /AcceptEndUserLicenseAgreement:1
When I run the script, I get a pop-up: “System CenterOperations Manager Setup has stopped working with the following:
Problem signature:
Problem Event Name:
CLR20r3
Problem Signature 01:
setupchainerui.exe
Problem Signature 02:
7.0.5000.0
Problem Signature 03:
522a5b85
Problem Signature 04:
mscorlib
Problem Signature 05:
4.0.0.0
Problem Signature 06:
53b4fc1e
Problem Signature 07:
e4d
Problem Signature 08:
5a
Problem Signature 09:
System.FormatException
OS Version:
6.1.7601.2.1.0.274.10
Locale ID:
1033
Additional Information 1:
4911
Additional Information 2:
49111a576c61a461b7f2900e4224563c
Additional Information 3:
a1e6
Additional Information 4:
a1e62e9c159c1d7601a31ccff83dbf94
App Event Log:
- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name=".NET Runtime" />
<EventID Qualifiers="0">1026</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2015-01-29T19:02:39.000000000Z" />
<EventRecordID>4999</EventRecordID>
<Channel>Application</Channel>
<Computer>SERVER NAME</Computer>
<Security />
</System>
- <EventData>
<Data>Application: SetupChainerUI.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception.
Exception Info: System.FormatException Stack: at Microsoft.SystemCenter.Essentials.SetupFramework.Program.Main()</Data>
</EventData>
</Event>
- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="Application Error" />
<EventID Qualifiers="0">1000</EventID>
<Level>2</Level>
<Task>100</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2015-01-29T19:02:41.000000000Z" />
<EventRecordID>5000</EventRecordID>
<Channel>Application</Channel>
<Computer>SERVER NAME</Computer>
<Security />
</System>
- <EventData>
<Data>SetupChainerUI.exe</Data>
<Data>7.1.10226.0</Data>
<Data>522a5b85</Data>
<Data>KERNELBASE.dll</Data>
<Data>6.1.7601.18409</Data>
<Data>5315a05a</Data>
<Data>e0434352</Data>
<Data>000000000000940d</Data>
<Data>a64</Data>
<Data>01d03bf626a03a7a</Data>
<Data>C:\Users\USER NAME\AppData\Local\SCOM\Setup\SetupChainerUI.exe</Data>
<Data>C:\Windows\system32\KERNELBASE.dll</Data>
<Data>65be21be-a7e9-11e4-a4d7-005056966e1b</Data>
</EventData>
</Event>
- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="Windows Error Reporting" />
<EventID Qualifiers="0">1001</EventID>
<Level>4</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2015-01-29T19:03:27.000000000Z" />
<EventRecordID>5001</EventRecordID>
<Channel>Application</Channel>
<Computer>SERVER NAME</Computer>
<Security />
</System>
- <EventData>
<Data />
<Data>0</Data>
<Data>CLR20r3</Data>
<Data>Not available</Data>
<Data>0</Data>
<Data>setupchainerui.exe</Data>
<Data>7.0.5000.0</Data>
<Data>522a5b85</Data>
<Data>mscorlib</Data>
<Data>4.0.0.0</Data>
<Data>53b4fc1e</Data>
<Data>e4d</Data>
<Data>5a</Data>
<Data>System.FormatException</Data>
<Data />
<Data />
<Data>C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_setupchainerui.e_9724aaa8eec4ffba07c27fea369e612e949d75_5b269652</Data>
<Data />
<Data>0</Data>
<Data>65be21be-a7e9-11e4-a4d7-005056966e1b</Data>
<Data>0</Data>
</EventData>
</Event>
OpsMgrSetupWizard.log
[13:48:16]:
Error:     :Uncaught Exception: Threw Exception.Type: System.FormatException, Exception Error Code: 0x80131537, Exception.Message: Input string was not in a correct format.
[13:48:16]:
Error:     :StackTrace:
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   at Microsoft.SystemCenter.Essentials.SetupFramework.PropertyBagDictionary.GetProperty[T](String property)
   at Microsoft.EnterpriseManagement.OperationsManager.Setup.Common.SetupHelpers.ValidateBureaucraticSwitches()
   at Microsoft.EnterpriseManagement.OperationsManager.Setup.Common.RationalizeCommandLineArguments.ValidateSilentInstallCommandLineOptions()
   at Microsoft.EnterpriseManagement.OperationsManager.Setup.Common.RationalizeCommandLineArguments.Rationalize()
   at Microsoft.EnterpriseManagement.OperationsManager.Setup.Common.SetupHelpers.RationalizeGeneralInstall()
   at Microsoft.SystemCenter.Essentials.SetupFramework.Program.RationalizeInstall()
   at Microsoft.SystemCenter.Essentials.SetupFramework.Program.Main()
Any ideas? I feel like I’m just going in circles…Bob

Data Access Layer In BPM

Hi,
I am using WLPI. I need to define the data access layer. As workflows deal in
XML and for JDBC calls I need value objects. I have few questions:
Is there any proffered way of communication between BPM and database?
Does BEA/Sun/BPM Users recommend entity beans for data access thru BPM?
Do I have to write XML to value object and vice versa logic for each type of communication?
Please recommend a standard approach.
Thanks,
Parag

My questions are:
Is it proper to use AI Adaptors for normal database storage? and is there any
way to store the XML into its db representation? I was thinking of calling business
operation from BPM, passing the xml and parsing it in session bean and make jdbc
calls in ejb. Looks like a lot of effort. Hence I am curious to know other solutions
Thanks,
Parag
"Dharnidhar Vemuri" <[email protected]> wrote:
Hi,
Ways that I can think of are
- using Application Integration, specifically views (it also
uses
EJB)
- EJB classes
- a java class
I didn't get u what u meant by XML to value object. Can u be in more
detail.
Thanks
Dhar
"Parag" <[email protected]> wrote in message
news:[email protected]..
Hi,
I am using WLPI. I need to define the data access layer. As workflowsdeal
in
XML and for JDBC calls I need value objects. I have few questions:
Is there any proffered way of communication between BPM and database?
Does BEA/Sun/BPM Users recommend entity beans for data access thruBPM?
Do I have to write XML to value object and vice versa logic for eachtype
of communication?
Please recommend a standard approach.
Thanks,
Parag

Data Access Object for Data Warehouse?

Hi,
Does anyone know how the DAO pattern looks like when it is used for a data warehouse rather than a normal transactional database?
Normally we have something like CustomerDAO or ProductDAO in the DAO pattern, but for data warehouse applications, JOINs are used and multiple tables are queried, for example, a query may contains data from the Customer, Product and Time table, what should the DAO class be named? CustomerProductTimeDAO?? Any difference in other parts of the pattern?
Thanks in advance.
SK

In my opinion, there are no differences in the Data Access Object design pattern which have any thing to do with any characteristic of its implementation or the storage format of the data the pattern is designed to function with.
The core pupose of the DAO design pattern is to encapsulate data access code and separate it from the business logic code of the application. A DAO implementation might vary from application to application. The design pattern does not specify any implementation details. A DAO implementation can be applied to group of XML data files, an Excel-based CSV file, a relational database, or an OS file system. The design is the same for all these, it is the implementation that varies.
The core difference between an operational database and a strategic data warehouse is the purpose of why and how the data is used. It is not so much a technical difference. The relational design may vary however, there may be more tables amd ternary relationships in a data warehouse to support more fine-tuned queries; there may be less tables in a operational database to support insert/add efficiencies.
The DAO implementation for a data warehouse would be based on the model of the databases. However the tables are set up, that is how the DAO is coded.

Confusion... Data Access Object and Collection Class

Please help me...
i have a Book class in the library system, so normally i would have a Collection class eg. BookCollection class which keeps an array/ arrayList of Book objects. In BookCollection class i have methods like
"searchBook(BookID)" which would return me a Book object in the array.
But now i'm confused with Data Access Object... In sequence diagrams there's a "Data Access class" which is used to retrieve data from and send data to a database. So, if i have the Data Access class, do i still need BookCollection class? Because BookCollection serves as a database also rite? ...

I think you're in the right rail.
The BookCollection class could be still usefull if you will need to manage search results with more than onne record (e.g.: search by author name).

Does it make sense to create a worker role for data access to DocumentDB?

Hi,
I'm building an ASP.NET MVC app that will run on Azure. I'm using DocumentDB as its back-end database.
Sometimes, I return multiple data sets from different collections that need to be "reorganized". I handle this using LINQ in my application code. Does it make sense then to put all my data access and manipulation code into a worker role that I
can call from my web application that will run as a web role?
The reason why I'm thinking this may be beneficial is that I could scale up my worker role to increase its data manipulation capacity.
On the other hand, in most cases, my web role has to wait for a response from the DAL before it can do anything -- meaning, I cannot handle data access asynchronously -- I'm wondering if worker role approach makes any sense. I think mostly, worker roles
are used for operations that can run asynchronously.
I'd appreciate your feedback on this.
Thanks, Sam

Hi,
Worker role applications are background processing applications like Windows processes which run in the background. Applications hosted within worker roles can run asynchronous, we usually use worker role to do some long-running or perpetual tasks, and
use scale function to load balance the tasks. Based on your description, it seems that worker role is a good choice for you, please try it, if you have further issues, welcome to create new threads in our forum.
Best Regards,
Jambor
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I just bought a new mac book pro. I would like to access all my purchased games for mac that I made on my iMac. How do I do this?

I just bought a new mac book pro. I would like to access all my purchased games for mac that I made on my iMac. How do I do this?

Use the Migration Assistant(it'll put the data into a different user account if you've already created one), or drag them and their data through Ethernet, wireless, Target Disk mode, or through an external drive, or reinstall them from the original source.
(100927)

Coherence as like data access

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