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  • How to implement Master-Detail with Multi-Selection in WPF?

    - by gehho
    Hi, I plan to create a typical Master-Detail scenario, i.e. a collection of items displayed in a ListView via DataBinding to an ICollectionView, and details about the selected item in a separate group of controls (TextBoxes, NumUpDowns...). No problem so far, actually I have already implemented a pretty similar scenario in an older project. However, it should be possible to select multiple items in the ListView and get the appropriate shared values displayed in the detail view. This means, if all selected items have the same value for a property, this value should be displayed in the detail view. If they do not share the same value, the corresponding control should provide some visual clue for the user indicating this, and no value should be displayed (or an "undefined" state in a CheckBox for example). Now, if the user edits the value, this change should be applied to all selected items. Further requirements are: MVVM compatibility (i.e. not too much code-behind) Extendability (new properties/types can be added later on) Does anyone have experience with such a scenario? Actually, I think this should be a very common scenario. However, I could not find any details on that topic anywhere. Thanks! gehho. PS: In the older project mentioned above, I had a solution using a subclass of the ViewModel which handles the special case of multi-selection. It checked all selected items for equality and returned the appropriate values. However, this approach had some drawbacks and somehow seemed like a hack because (besides other smelly things) it was necessary to break the synchronization between the ListView and the detail view and handle it manually.

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  • Copy a multi-dimentional array by Value (not by reference) in PHP.

    - by Simon R
    Language: PHP I have a form which asks users for their educational details, course details and technical details. When the form is submitted the page goes to a different page to run processes on the information and save parts to a database. HOWEVER(!) I then need to return the page back to the original page, where having access to the original post information is needed. I thought it would be simple to copy (by value) the multi-dimensional (md) $_POST array to $_SESSION['post'] session_start(); $_SESSION['post'] = $_POST; However this only appears to place the top level of the array into $_SESSION['post'] not doing anything with the children/sub-arrays. An abbreviated form of the md $_POST array is as follows: Array ( [formid] = 2 [edu] = Array ( ['id'] = Array ( [1] = new_1 [2] = new_2 ) ['nameOfInstitution'] = Array ( [1] = 1 [2] = 2 ) ['qualification'] = Array ( [1] = blah [2] = blah ) ['grade'] = Array ( [1] = blah [2] = blah ) ) [vID] = 61 [Submit] = Save and Continue ) If I echo $_SESSION['post']['formid'] it writes "2", and if I echo $_SESSION['post']['edu'] it returns "Array". If I check that edu is an array (is_array($_SESSION['post']['edu])) it returns true. If I echo $_SESSION['post']['edu']['id'] it returns array, but when checked (is_array($_SESSION['post']['edu]['id'])) it returns false and I cannot echo out any of the elements. How do I successfully copy (by value, not by reference) the whole array (including its children) to an new array?

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  • Path to XML DTD for DBUnit in multi-module Java/Maven project?

    - by HDave
    I have a multi-module maven project. Within the persist module I have a number of XML files data files that reference a DTD: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE myapp-data SYSTEM "myapp-data.dtd" > <dataset> .....omitted for brevity.... </dataset> The DTD is stored in the same directory with the XML files and even Eclipse reports these XML files as valid. However, when I run the application, the DBUnit FlatXMLDataSet throws a FileNotFound exception because it cannot located the DTD. It is apparently looking for the DTD in the root project directory (e.g. myproject/). I would have expected it to look for the DTD in the same directory as the XML file itself (e.g. myproject/persist/target/test-data). Looking at the DBUnit source code, it has this to say about it "Relative DOCTYPE uri are resolved from the current working dicrectory." What's a good way to fix this?

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  • What are some of the core principles needed to master Multi threading using Delphi?

    - by Gary Becks
    I am kind of new to programming in general (about 8 months with on and off in delphi and a little python here and there) and I am in the process of buying some books. I am interested in learning about concurrent programming and building multi threaded apps using Delphi. Whenever I do a search for "multithreading delphi" or "delphi multithreading tutorial" I seem to get conflicting results as some of the stuff is about using certain libraries (omnithread library) and other stuff seems to be more geared towards programmers with more experience. I have studied quite a few books on delphi and for the most part they seem to kind of skim the surface and not really go into depth on the subject. I have a friend who is a programmer (he uses c++) who recommends I learn what is actually going on with the underlying system when using threads as opposed to jumping into how to actually implement them in my programs first. On amazon.com there are quite a few books on concurrent programming but none of them seem to be made with Delphi in mind. Basically I need to know what are the main things I should be focused on learning before jumping into using threads, if I can/should attempt to learn them using books that are not specifically aimed at delphi developers (don't want to confuse myself reading books with a bunch of code examples in other languages right now) and if there are any reliable resources/books on the subject that anyone here could recommend. Thanks in advance.

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  • Java queue and multi-dimention array question? [Beginner level]

    - by javaLearner.java
    First of all, this is my code (just started learning java): Queue<String> qe = new LinkedList<String>(); qe.add("b"); qe.add("a"); qe.add("c"); qe.add("d"); qe.add("e"); My question: Is it possible to add element to the queue with two values, like: qe.add("a","1"); // where 1 is integer So, that I know element "a" have value 1. If I want to add a number let say "2" to element a, I will have like a = 3. If this cant be done, what else in java classes that can handle this? I tried to use multi-dimention array, but its kinda hard to do the queue, like pop, push etc. (Maybe I am wrong) How to call specific element in the queue? Like, call element a, to check its value. [Note] Please don't give me links that ask me to read java docs. I was reading, and I still dont get it. The reason why I ask here is because, I know I can find the answer faster and easier.

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  • Can we solve the table row background image problem, in chrome, in multi celled tables??

    - by Ya'el
    It is frequently asked – but I haven’t seen a good answer yet (and I looked). If you set a background image in CSS to a table row- the image will repeat itself in every cell. If you set the position: relative (for the row) and set the background-image: none (for the cells) it solves the problem on IE but not on chrome! I can't use background positioning since there are many calls and their size varies. (And the picture is not symmetrical- It's a fade out from one side. Anybody?? Example for the css code : tr { height: 30px; position:relative;} tr.green {background: url('green_30.png') no-repeat left top;} tr.orange {background: url('oranger_30.png') no-repeat left top;} tr.red {background: url('red_30.png') no-repeat left top;} td {background-image:none;} The HTML is basic - A multi cell table. The goal is to have different colors fade into every row, but it could be any non-pattern image.

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  • How can I use multi-threading with a "for" or "foreach" loop?

    - by saafh
    I am trying to run the for loop in a separate thread so that the UI should be responsive and the progress bar is visible. The problem is that I don't know how to do that :). In this code, the process starts in a separate thread, but the next part of the code is executed at the same time. The messageBox is displayed and the results are never returned (e.g. the listbox's selected index property is never set). It doesn't work even if I use, "taskEx.delay()". TaskEx.Run(() => { for (int i = 0; i < sResults.Count(); i++) { if (sResults.ElementAt(i).DisplayIndexForSearchListBox.Trim().Contains(ayaStr)) { lstGoto.SelectedIndex = i; lstGoto_SelectionChanged(lstReadingSearchResults, null); IsIndexMatched = true; break; } } }); //TaskEx.delay(1000); if (IsIndexMatched == true) stkPanelGoto.Visibility = Visibility.Collapsed; else //the index didn't match { MessagePrompt.ShowMessage("The test'" + ayaStr + "' does not exist.", "Warning!"); } Could anyone please tell me how can I use multi-threading with a "for" or "foreach" loop?

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  • What's the best way to handle layout issues with multi-language support in WPF/XAML?

    - by Tim
    I'm creating a standalone WPF app with multi-language support. I've found some great resources (mostly on SO) on how to store and access the strings as needed. This part is pretty straightforward and doable, but I'm fuzzy on how to take care of screen layout issues. I'm using some custom images to skin up my app for buttons, etc. For instance, here's a button with some text within: <Button Canvas.Left="33" Canvas.Top="484" Style="{StaticResource SmallButtonBase}"> <TextBlock FontSize="20" FontWeight="Bold" TextAlignment="Center" FontFamily="Helvetica"> Enter </TextBlock> </Button> Now here is the same button with text from another language: <Button Canvas.Left="33" Canvas.Top="484" Style="{StaticResource SmallButtonBase}"> <TextBlock FontSize="20" FontWeight="Bold" TextAlignment="Center" FontFamily="Helvetica"> Enterenschtein </TextBlock> </Button> So my question is: What is a good method to prevent this "overflow" situation. I'd like to have XAML take care of any font resizing or indenting that is needed automatically so that I don't have to tweak the UI for each language I'm supporting. Any insight is appreciated!

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  • Windows Home Server style redundancy/multi-disk-support on Windows Server 2008 R2?

    - by user19597
    I'm setting up a fileserver for our department. It'll be connected to the domain. I want it to have a very large amount of storage (several TB). Ideally, it should also preserve disk space by identifying identical files and only storing them once. It should be fault tollerant so that if one of the drives fails, that drive can be replaced without losing any data. All of these features are available in Microsoft's consumer offering - Windows Home Server. However, I can't find these kind of features within the enterprise Windows Server 2008 R2. Am I missing something? I know that I could buy a Drobo, or similar, and use this instead. However, I would prefer to use a built-in feature of Windows Server should it exist. It seems surprising to me that these features should be available in Home Server but not in an enterprise fileserver.

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  • Changing externally visible IP on a multi-IP router?

    - by AlternateZ
    I work at a public library and I'm trying to configure OCLC's EzProxy software. I've run into a problem and I think it's related to our network config. I'm punching above my weight here a little so I need some help. I think I'm trying to configure a 1:1 NAT, but not sure how or if our hardware supports it. The EzProxy machine is on an internet line which supports multiple external IPs. Our router is a Billion BiGuard30. There's another server on this line, let's say its IP is x.x.x.9. The EzProxy machine is x.x.x.11 I've set up port forwarding from x.x.x.11 on the http ports to the EzProxy machine. Trying to browse to x.x.x.11 from an external PC works fine - we get to the EzProxy page we are serving. However, if we go to something like WhatIsMyIP from the EzProxy machine, it says that its IP is x.x.x.9. This causes problems with our user authentication software. How do we make the rest of the internet see that the machine is x.x.x.11? There doesnt seem to be any "outbound port forwarding" on the Billion router, nor is there any "1:1 NAT" options in its config webpage. The EzProxy machine is running Ubuntu 12.04, if that helps.

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  • Where can I find a useful multi-language Unicode font for Mac OS X?

    - by Stephen Jennings
    On every browser I've tried (Firefox, Safari, Chrome, and Omniweb), when I go to a web page containing somewhat less-common characters, I can't see the glyphs. For example, on the Wikipedia page for the Bengali Language, the very first line contains a string of squares; on Windows, I can see the Bengali writing. Firefox does display code points on the Coptic Language article, but not Bengali. I'm not sure why. On Windows, as long as I have the Arial Unicode MS font installed, these characters fall back to that font and display properly. Mac OS X doesn't seem to ship with a font containing these Unicode characters (it has Arial Unicode MS, but it must be a subset of the Windows version because Bengali doesn't display in that font). I checked on my Snow Leopard DVD and I installed "Additional Fonts" from the Optional Installs package, but I'm still missing many languages. Is there any good, free font that contains a large collection of languages? I know creating fonts is difficult and time-consuming, but it seems like including at least one font like this with operating systems should be standard by now.

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  • In a multi-domain forest, what EXACTLY happens when some, but not all, of the Infrastructure Masters are on Global Catalogs?

    - by MDMarra
    There are plenty of TechNet articles, like this one that say that phantom object don't get updated if an Infrastructure Master is also a Global Catalog, but other than that there isn't a lot of in depth information on what actually happens in this configuration. Imagine a configuration like this: |--------------| | example.com | | | | dedicated IM | |--------------| | | | |-------------------| | child.example.com | | | | IM on a GC | |-------------------| Where child has two DCs that are both global catalogs, meaning that the Infrastructure Master role is on a GC. And, example has three DCs with the Infrastructure Master role on a DC that is not a GC. I understand that it's usually best to just make everything a GC and not have to worry about this sort of thing, but assuming that's not the case - what is the exact error behavior that can be expected from a setup like this, and which domain(s) would this behavior manifest in? The child or the parent?

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  • How to make Linux reliably boot on multi-cpu machines?

    - by Adam Tabi
    I've got two machines, one with 4x12 AMD Opteron cores (AMD Opteron(tm) Processor 6176), one with 2x8 Xeon cores (HT disabled; Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz). On both machines I experience difficulties during boot of Linux using recent kernels. The system hangs during the initialization of the kernel, before or just when initramfs started initializing the hardware. The last thing which got displayed was a stacktrace like this: CPU: 31 PID: 0 Comm: swapper/31 Tainted: G D 3.11.6-hardened #11 Hardware name: Supermicro X9DRT-HF+/X9DRT-HF+, BIOS 3.00 07/08/2013 task: ffff880854695500 ti: ffff880854695a28 task.ti: ffff880854695a28 RIP: 0010:[<ffffffff8100a82e>] [<ffffffff8100a82e>] default_idle+0x6/0xe RSP: 0000:ffff8808546b3ec8 EFLAGS: 00000286 RAX: ffffffff8100a828 RBX: ffff880854695a28 RCX: 00000000ffffffff RDX: 0100000000000000 RSI: 0000000000000000 RDI: ffff88107fdec690 RBP: ffff8808546b3ec8 R08: 0000000000000000 R09: ffff880854695500 R10: ffff880854695500 R11: 0000000000000001 R12: ffff880854695a28 R13: ffff880854695a28 R14: ffff880854695a28 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88107fde0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000002b43256a960 CR3: 00000000016b5000 CR4: 00000000000607f0 Stack: ffff8808546b3ed8 ffffffff8100aec9 ffff8808546b3f10 ffffffff8109ce25 334ab55852ec7aef 000000000000001f ffffffff8102d6c0 0000000000000000 0000000000000000 ffff8808546b3f48 ffffffff810276e0 ffff8808546b3f28 Call Trace: [<ffffffff8100aec9>] arch_cpu_idle+0x20/0x2b [<ffffffff8109ce25>] cpu_startup_entry+0xed/0x138 [<ffffffff8102d6c0>] ? flat_init_apic_ldr+0x80/0x80 [<ffffffff810276e0>] start_secondary+0x2c9/0x2f8 I compiled the kernel myself and it works fine, if I boot with nolapic. Yet, only one core is used. Also, the kernel of RHEL6 seems to work fine. I suspect that there are some patches used to make things work. Using the kernel config file from RHEL6 and building a more recent kernel yields the same problems. On the Xeon machine, things got better by disabling Hyperthreading completely. The machine now boots successfully on at least 4 out of 5 times. And if it boots, multicore stuff works just fine. However, I'm wondering about what to do about the AMD machine. So to sum it up: Gentoo kernel 3.6 - 3.11 won't reliably boot those machines unless you reduce the amount of cores (e.g. via nolapic). RHEL6 kernel (which is 2.6.32) boots just fine. RH kernel config used to build a 3.x kernel won't yield a working kernel. Not distribution specific (apart from the kernel being used). These stack traces got printed every minute or so. The kernel seems to be stuck in an endless loop. Yet, a recent kernel is needed for various reasons. So the question is: What does the RHEL6 kernel do, what vanilla or gentoo kernels don't do? Is there a boot option that might lead to a reliable boot with all the cores enabled? Best, Adam

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  • How do I perform multi-window operations on a non-combined group of windows in Windows 7?

    - by BACON
    With multiple windows/instances of an application open and the taskbar buttons set to "Always combine, hide labels", I can Shift + right-click the taskbar button for the window group to open a menu allowing me to "Cascade", "Show windows stacked", "Show windows side by side", "Restore all windows", "Minimize all windows", or "Close all windows". With the taskbar buttons set to "Combine when taskbar is full" or "Never combine", when I right-click, Shift + right-click, or Ctrl + right-click either the button or the Aero preview for a window in the group I get a menu allowing me to perform window operations on just that one window rather than each window in the group. When I have a non-combined group of windows in the taskbar, how would I cascade, stack, etc. that group of windows?

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  • How to use Timer broadcast on Multi-Processor system with linux 3.10?

    - by kevin.ji
    Hardware: ARM Cortex-A9 * 2 Software: linux-3.10.0 The platform has 2 cores of arm cortex-a9. Item CONFIG_LOCAL_TIMERS is not set in linux menuconfig. I want to use only one hardware timer to supply tick for all cpu. Interrupts looks like: CPU0 CPU1 57: 6697 0 GIC timer 81: 213 0 GIC uart-pl011 103: 0 0 GIC gmac0 104: 0 0 GIC gmac1 IPI0: 0 1 CPU wakeup interrupts IPI1: 0 0 Timer broadcast interrupts IPI2: 967 866 Rescheduling interrupts IPI3: 0 0 Function call interrupts IPI4: 1 2 Single function call interrupts IPI5: 0 0 CPU stop interrupts IPI6: 0 0 CPU backtrace Err: 0 Timer broadcast interrupts counter does not add. And it looks like that cpu1 does not work at all.But this method works well with linux-3.4, and the interrupt info looks as below in linux-3.4: # cat /proc/interrupts CPU0 CPU1 57: 8596 0 GIC timer 81: 91 0 GIC uart-pl011 103: 0 0 GIC gmac0 104: 0 0 GIC gmac1 IPI0: 0 8560 Timer broadcast interrupts IPI1: 884 1020 Rescheduling interrupts IPI2: 0 0 Function call interrupts IPI3: 0 6 Single function call interrupts IPI4: 0 0 CPU stop interrupts IPI5: 0 0 CPU backtrace Err: 0 The count of Timer broadcast interrupts is adding. And all of cpus work well. I don't know why. Any answer is welcome. :)

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  • How to quickly switch monitors on multi-monitor setup?

    - by Saxtus
    At my desktop PC, I have 3 displays hooked up on my Palit GeForce GTX 480 to extend my desktop: DVI: Samsung SyncMaster T220 (22" 16:10, 1680x1050, as my main) DVI: Samsung SyncMaster 940BF (19" 4:3, 1280x1024) HDMI: Sony Bravia KDL-32D3000 (32" 16:9, 1360x768) As expected, the GFX card can only utilize 2 of the displays at any given time, so I have to manually switch using Windows' "Display Properties" dialog, each time I want to switch between them. I've tried UltraMon, DisplayFusion and PowerStrip (so please don't refer me to a question where those are given as solutions) but they are unable to switch monitors. Instead they can only change display resolutions and settings on the existing active monitors, with specially weird results when I've saved the monitor states and then tried to switch monitors using the saved states! Any idea on how to bypass the awful "Display Properties" dialog and it's "confirm your change" timer?

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  • How do you enable multi-core virtualization in Windows 8 Pro?

    - by Greg B
    I've just got a new Dell Vostro 470 with a quad core (8 threads) i7 3770 and I'm trying to run virtual machines on it, which works fine, except if I want to assign multiple cores to a VM. I've checked the bios which states Intel Virtualization Technology [Enabled], but both Hyper-V and VirtualBox will only allow me to assign a single core. If I run the Intel Processor Identification Utility on the host OS it tells me that Intel Virtualization Technology isn't supported by the processor, but according to the Intel website, it is. So whats going on? Have Dell clipped the i7's wings? Is there some config in Windows I need to change?

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  • How to quickly switch monitors on multi-monitor setup? (W7)

    - by Saxtus
    At my desktop PC, I have 3 displays hooked up on my Palit GeForce GTX 480 to extend my desktop: DVI: Samsung SyncMaster T220 (22" 16:10, 1680x1050, as my main) DVI: Samsung SyncMaster 940BF (19" 4:3, 1280x1024) HDMI: Sony Bravia KDL-32D3000 (32" 16:9, 1360x768) As expected, the GFX card can only utilize 2 of the displays at any given time, so I have to manually switch using Windows' "Display Properties" dialog, each time I want to switch between them. I've tried UltraMon, DisplayFusion and PowerStrip (so please don't refer me to a question where those are given as solutions) but they are unable to switch monitors. Instead they can only change display resolutions and settings on the existing active monitors, with specially weird results when I've saved the monitor states and then tried to switch monitors using the saved states! Any idea on how to bypass the awful "Display Properties" dialog and it's "confirm your change" timer? Thanks in advance.

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  • Using VirtualBox/VMWare to deploy software to multi sites ?

    - by Sim
    Hi all, I'm currently evaluating the feasibility of using VirtualBox (or VMWare) to deploy the follow project to 10 sites Windows XP MSSQL 2005 Express Edition with Advanced Services JBoss to run 1 in-house software that mostly query master data (customers/products) and feed to other software Why I want to do this ? Because the IT staffs in my 10 sites are not capable enough and the steps taken to setup those "in-house project" are also complicated What are the cons I can forsee ? Need extra power to run that virtualbox instance The IT staffs won't be much knowledgeable 'bout how to install the stuffs Cost (license for VirtualBox in commercial environment as well as extra OS license) I really seek your inputs on the pro/con of this approach, or any links that I can read further Thanks a lot

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  • On Windows 7, how can I tell if a recording is multi-channel without third party tools? [migrated]

    - by engineerchuan
    A customer has an audio that is confidential and can't send it to me. He also would not like to install other tools. He has a basic Windows 7 install. Is there any way to tell whether the recording is one channel or two channel? Normally, I would just get the audio and soxi it. Or, I would tell him to install Audacity or equivalent sound editor and open it up. I also thought that if you right clicked and looked at the size, bit rate, and length, you could get number of channels but bit rate already factors in number of channels. Sorry I'm not giving you a lot to work with.

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  • can I consolidate a multi-disk zfs zpool to a single (larger) disk?

    - by rmeden
    I have this zpool: bash-3.2# zpool status dpool pool: dpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM dpool ONLINE 0 0 0 c3t600601604F021A009E1F867A3E24E211d0 ONLINE 0 0 0 c3t600601604F021A00141D843A3F24E211d0 ONLINE 0 0 0 I would like to replace both of these disks with a single (larger disk). Can it be done? zpool attach allows me to replace one physical disk, but it won't allow me to replace both at once.

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  • Which is better for multi-use auth, MySQL, PostgreSQL, or LDAP?

    - by Fearless
    I want to set up an Oracle Linux 6 server that gives users secure IMAP email (with dovecot), Jabber IM, FTP (with vsftpd), and calDav. However, I want each user logon to be able to authenticate all services (e.g. Joe Smith signs up once for a username and password that he can use for email, ftp, and his calendar). My question is, which database service will be best suited for that application? Also, is there a way to link the database with the preexisting server shell logins (e.g. so I can read the root account's LogCheck emails on a different device)?

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