[sqlite] Is SQLite a DBMS?

Hi, I need to know if SQLite is a DBMS and why. Please its urgent. -- View this message in context: http://sqlite.1065341.n5.nabble.com/Is-SQLite-a-DBMS-tp70868.html Sent from the SQLite mailing list archive at Nabble.com. ___ sqlite-users mailing

Re: [sqlite] Is SQLite a DBMS?

Hi, Wikipedia answers with yes and why (= because it's ACID and SQL compliant) within the first three sentences! http://en.wikipedia.org/wiki/SQLite Yours, S. 2013/9/1 kimtiago > Hi, > > I need to know if SQLite is a DBMS and why. > > Please its urgent. > > > > -- > View

Re: [sqlite] Is SQLite a DBMS?

On 1 Sep 2013, at 5:39am, kimtiago wrote: > I need to know if SQLite is a DBMS and why. That's okay. Just have your teacher post here and we'll tell them directly. Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org

Re: [sqlite] Is SQLite a DBMS?

Wait a second, this is a mailing list where you need to register to write. Isn't it? It means the OP actually registered but he did not try to seek for wikipedia sqlite in google? It is just me or it is quite weird? On Sun, Sep 1, 2013 at 12:23 PM, Simon Slavin wrote: > >

Re: [sqlite] Is SQLite a DBMS?

tOn Sun, 1 Sep 2013 12:34:02 +0200, Paolo Bolzoni wrote: > > Wait a second, this is a mailing list where you need > to register to write. Isn't it? Yes, but he appears to have posted from nabble. I guess nabble has a subscription. > It means the OP actually

Re: [sqlite] to encrypt sqlite db

Am 31.08.2013 22:01, schrieb Etienne: On Sat, 31 Aug 2013 17:17:23 +0200 Etienne wrote: > > On the other hand removing patterns definitely cannot hurt. > > Precisely. > > The very first bytes of SQLite files are, AFAIK, well known. That's what salt

Re: [sqlite] to encrypt sqlite db

On 31/8/2013 9:52 PM, dd wrote: Thank you for your quick response. I am looking for freeware. If freeware not available, I have to implement encryption support for sqlite on winrt. What is the procedure to implement encryption support on winrt? Thanks, dd Many others have replied with the

Re: [sqlite] to encrypt sqlite db

Ulrich Telle wrote: > Am 31.08.2013 22:01, schrieb Etienne: >> I simply wanted to warn the OP that wxSQLite, while free, does NOT use >> salts: > > Well, that's not completely true. The encryption extension coming with > wxSQLite3 uses a different IV (initial vector) for each database page. > True

Re: [sqlite] to encrypt sqlite db

On Sun, Sep 1, 2013, at 17:50, Clemens Ladisch wrote: > Ulrich Telle wrote: > > Am 31.08.2013 22:01, schrieb Etienne: > >> I simply wanted to warn the OP that wxSQLite, while free, does NOT use > >> salts: > > > > Well, that's not completely true. The encryption extension coming with > > wxSQLite3

Re: [sqlite] to encrypt sqlite db

Another weird sentence in the mailing list of probably most used DB that is really free. On Sun, Sep 1, 2013 at 6:10 PM, Etienne wrote: > On Sun, Sep 1, 2013, at 17:50, Clemens Ladisch wrote: >> Ulrich Telle wrote: >> > Am 31.08.2013 22:01, schrieb Etienne: >> >> I

Re: [sqlite] to encrypt sqlite db

wxSQLite (relevant part) and SEE are extensions to SQLite. wxSQLite is free, while SEE is definitively not. wxSQLite means "pseudo" encryption (as formerly discussed), while SEE is real encryption. What is weird??? Regards, Etienne - Original message - From: Paolo Bolzoni

[sqlite] help needed for major SQLite problem

Keeping it simple: I have a Python application that uses SQLite, and I randomly get this error: "SQL logic error or missing database" I have no idea how to figure out what's wrong, and if I can't figure it out, it leaves a huge deal-breaking bug in my application, such that I'd have to abandon

Re: [sqlite] help needed for major SQLite problem

On Sun, Sep 1, 2013 at 1:12 PM, C M wrote: > > I have a Python application that uses SQLite, and I randomly get this > error: > > "SQL logic error or missing database" > > I have no idea how to figure out what's wrong, > A good starting place might be to tell us what the

Re: [sqlite] to encrypt sqlite db

Am 01.09.2013 18:40, schrieb Etienne: wxSQLite is free, while SEE is definitively not. The original poster searched for a free encryption extension, of which there exist several: System.Data.SQLite (RC4), wxSQLite3 (AES-128 or AES-256), SQLCipher (AES-256 with nonce) to name a few.

Re: [sqlite] help needed for major SQLite problem

On 1 Sep 2013, at 6:38pm, Richard Hipp wrote: > A good starting place might be to tell us what the program is doing when > the error comes back. As well as telling us the call that trieggers the error, please put logic into your program so that it not only checks the result

Re: [sqlite] help needed for major SQLite problem

"C M" wrote... Keeping it simple: I have a Python application that uses SQLite, and I randomly get this error: "SQL logic error or missing database" Is the database in network drive or not in the same machine that is running the app? ___

Re: [sqlite] help needed for major SQLite problem

On Sun, Sep 1, 2013 at 1:38 PM, Richard Hipp wrote: > On Sun, Sep 1, 2013 at 1:12 PM, C M wrote: > > > > > I have a Python application that uses SQLite, and I randomly get this > > error: > > > > "SQL logic error or missing database" > > > > I have no idea

Re: [sqlite] help needed for major SQLite problem

On Sun, Sep 1, 2013 at 2:23 PM, Simon Slavin wrote: > > On 1 Sep 2013, at 6:38pm, Richard Hipp wrote: > > > A good starting place might be to tell us what the program is doing when > > the error comes back. > > As well as telling us the call that trieggers

Re: [sqlite] help needed for major SQLite problem

On Sun, Sep 1, 2013 at 4:28 PM, jose isaias cabrera wrote: > > "C M" wrote... > > > Keeping it simple: >> >> I have a Python application that uses SQLite, and I randomly get this >> error: >> >> "SQL logic error or missing database" >> >> Is the database in network drive

Re: [sqlite] help needed for major SQLite problem

Does Python have an interface to the error and warning log mechanism of SQLite? (http://www.sqlite.org/errlog.html) Can you turn that on? It will probably give more details about what it happening. On Sun, Sep 1, 2013 at 5:32 PM, C M wrote: > On Sun, Sep 1, 2013 at 1:38

Re: [sqlite] help needed for major SQLite problem

On 1 Sep 2013, at 10:34pm, C M wrote: > Do you know how I can do that with Python? For example, I tried this: > > status = cursor.execute("some SQL statement here") > print "The status is: ", status > > But it prints the cursor object: > >> The status is Does the

Re: [sqlite] help needed for major SQLite problem

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 01/09/13 14:34, C M wrote: > Do you know how I can do that with Python? For example, I tried this: > > status = cursor.execute("some SQL statement here") print "The status > is: ", status > > But it prints the cursor object: > >> The status is

Re: [sqlite] help needed for major SQLite problem

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 He needs to give the exception traceback which will show what is happening at the time. A common mistake with newish Python programmers is to catch all exceptions, and then keep going which also hides the exception tracebacks. On 01/09/13 15:12,

[sqlite] Query problems

I have a query that is unbearable at scale, for example when s_table_a and s_table_b have 70k and 1.25M rows. SELECT s.id AS s_id ,s.lid AS s_lid ,sa.val AS s_sid ,d.id AS d_id ,d.lid AS d_lid FROM s_table_b sa JOIN d_table_b da ON ( da.key=sa.key

Re: [sqlite] Query problems

Hi, Can you do "DESCRIBE QUERY PLAN " and post results here? Also, what do you mean by "unbearable at scale"? Did you measure it? What is the result? Thank you. On Sun, Sep 1, 2013 at 6:03 PM, Joseph L. Casale wrote: > I have a query that is unbearable at scale, for

Re: [sqlite] Query problems

On 2 Sep 2013, at 2:03am, Joseph L. Casale wrote: > I am using LIKE as the columns are indexed NOCASE and I need the > comparison case insensitive. Have you tried using '=' ? Also if you declare the columns as COLLATE NOCASE in your table definition, then using '='

Re: [sqlite] Query problems

> Hi, > Can you do "DESCRIBE QUERY PLAN " and post results here? > > Also, what do you mean by "unbearable at scale"? Did you measure it? What > is the result? > > Thank you. It doesn't finish with maybe 4 or 5 hours run time. Sorry, do you mean "explain query plan ..."? 0 0 1

Re: [sqlite] Query problems

> Have you tried using '=' ? > > Also if you declare the columns as COLLATE NOCASE in your table definition, > then using '=' will definitely work the way you want it to. An example would > be > > CREATE TABLE myTable (myName TEXT COLLATE NOCASE) > > Simon. I did and it excluded the

Re: [sqlite] Query problems

> I am using LIKE as the columns are indexed NOCASE and I need the > comparison case insensitive. I suspect this is where is breaks down > but I don't know enough sql to really appreciate the ways I could > approach this better. LIKE is used when comparing strings with wildcards. For example,

Re: [sqlite] Query problems

Hi, Joseph, On Sun, Sep 1, 2013 at 6:21 PM, Joseph L. Casale wrote: > > Hi, > > Can you do "DESCRIBE QUERY PLAN " and post results here? > > > > Also, what do you mean by "unbearable at scale"? Did you measure it? What > > is the result? > > > > Thank you. > > It

Re: [sqlite] Query problems

> LIKE is used when comparing strings with wildcards. For example, val LIKE > 'abra%' (which will match 'abraCaDAbra' and 'abrakadee'. > > If there are no wildcards you should be using =, not LIKE. LIKE will/should > always indicate that a table or index scan is required, perhaps of the whole >

Re: [sqlite] Query problems

> > 0 0 1 SCAN TABLE d_table_b AS da (~10 rows) > > > > Is this the index you referenced in you reply to Simon? > Maybe you are using wrong index/column? I'll recheck, I am also reading up on indexes as they relate to optimizing queries. Could be I made a mistake. > I had

Re: [sqlite] Query problems

> Have you tried using '=' ? > > Also if you declare the columns as COLLATE NOCASE in your table definition, > then using '=' will definitely work the way you want it to. An example would > be > > CREATE TABLE myTable (myName TEXT COLLATE NOCASE) Simon, That took this query from not finishing

Re: [sqlite] to encrypt sqlite db

On Sun, Sep 1, 2013, at 19:59, Ulrich Telle wrote: > Am 01.09.2013 18:40, schrieb Etienne: > > wxSQLite is free, while SEE is definitively not. > > The original poster searched for a free encryption extension, of which > there exist several: System.Data.SQLite (RC4), wxSQLite3 (AES-128 or >

Re: [sqlite] to encrypt sqlite db

Am 02.09.2013 06:11, schrieb Etienne: wxSQLite3 does implement AES in ECB mode Wrong. CBC mode is used. Regards, Ulrich ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users