Re: [sqlite] Multiple databases vs. Multiple tables.
On boot up the device will discover the servers and enumerate what they have, then when it is done it will just wait for updates from the servers. I do not know how big the servers are, each server/media library may be different. -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Rich Shepard Sent: Tuesday, October 26, 2010 10:59 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] Multiple databases vs. Multiple tables. On Tue, 26 Oct 2010, Dariusz Matkowski wrote: > Queries will be done across the servers to aggregate the content. I am > concern about the locking mechanism, if I write to the single database and > I represent the servers as tables I will have no access to read the other > servers/tables, but if I distribute the servers across different DBs I can > write into one and the other ones are open to read. How frequently are data written to the tables? How much data per write? It appears that you want to use separate databases for each server so you might try that and see how well it works for you. Rich ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users - This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Multiple databases vs. Multiple tables.
On Tue, 26 Oct 2010, Dariusz Matkowski wrote: > Queries will be done across the servers to aggregate the content. I am > concern about the locking mechanism, if I write to the single database and > I represent the servers as tables I will have no access to read the other > servers/tables, but if I distribute the servers across different DBs I can > write into one and the other ones are open to read. How frequently are data written to the tables? How much data per write? It appears that you want to use separate databases for each server so you might try that and see how well it works for you. Rich ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Multiple databases vs. Multiple tables.
Queries will be done across the servers to aggregate the content. I am concern about the locking mechanism, if I write to the single database and I represent the servers as tables I will have no access to read the other servers/tables, but if I distribute the servers across different DBs I can write into one and the other ones are open to read. -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Rich Shepard Sent: Tuesday, October 26, 2010 9:57 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] Multiple databases vs. Multiple tables. On Tue, 26 Oct 2010, Dariusz Matkowski wrote: > Only one user (the browser). The DB is on a device the same place where > the user (Browser) is. A process will collect the information about the > servers and their contents and story it to the DB at the same time the > user may ask for the contents to display on the screen. Then the next question is wether queries are restricted to each server. If so, you could have a separate database for each. Alternatively, you can define a server table and associate each one with the other data you collect and retrieve. The latter approach is more flexible and allows easier changes if/when your information needs change. Rich ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users - This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Multiple databases vs. Multiple tables.
On Tue, 26 Oct 2010, Dariusz Matkowski wrote: > Only one user (the browser). The DB is on a device the same place where > the user (Browser) is. A process will collect the information about the > servers and their contents and story it to the DB at the same time the > user may ask for the contents to display on the screen. Then the next question is wether queries are restricted to each server. If so, you could have a separate database for each. Alternatively, you can define a server table and associate each one with the other data you collect and retrieve. The latter approach is more flexible and allows easier changes if/when your information needs change. Rich ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Multiple databases vs. Multiple tables.
Only one user (the browser). The DB is on a device the same place where the user (Browser) is. A process will collect the information about the servers and their contents and story it to the DB at the same time the user may ask for the contents to display on the screen. -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Rich Shepard Sent: Tuesday, October 26, 2010 9:24 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] Multiple databases vs. Multiple tables. On Tue, 26 Oct 2010, Dariusz Matkowski wrote: > in your opinion is it better (performance, maintainability etc...) to > have multiple databases or multiple tables. The problem I am facing is as > follows. I have many media servers containing a large amount of images > music and videos, let's assume 5. I would like to gather the information > (metadata, thumbnails, location etc) and story it in the database. I will > also have a GUI/Browser that will display that information. Now, the > question is it better to use multiple databases, each server = one > database or each server = one table. Daiuusz, I suggest you're asking the wrong questions. How many simultaneous users will access data in the database? Will the database be stored on one server and accessed across the network? It might be that for your application SQLite is not the appropriate tool. Rich ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users - This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Multiple databases vs. Multiple tables.
On Tue, 26 Oct 2010, Dariusz Matkowski wrote: > in your opinion is it better (performance, maintainability etc...) to > have multiple databases or multiple tables. The problem I am facing is as > follows. I have many media servers containing a large amount of images > music and videos, let's assume 5. I would like to gather the information > (metadata, thumbnails, location etc) and story it in the database. I will > also have a GUI/Browser that will display that information. Now, the > question is it better to use multiple databases, each server = one > database or each server = one table. Daiuusz, I suggest you're asking the wrong questions. How many simultaneous users will access data in the database? Will the database be stored on one server and accessed across the network? It might be that for your application SQLite is not the appropriate tool. Rich ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Multiple databases vs. Multiple tables.
Question, in your opinion is it better (performance, maintainability etc...) to have multiple databases or multiple tables. The problem I am facing is as follows. I have many media servers containing a large amount of images music and videos, let's assume 5. I would like to gather the information (metadata, thumbnails, location etc) and story it in the database. I will also have a GUI/Browser that will display that information. Now, the question is it better to use multiple databases, each server = one database or each server = one table. Regards, - This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
