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    <pre><code> - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { sk = [[SKDatabase alloc] init]; NSString *db = @"MindEditor.db"; [sk initWithDynamicFile:db]; userid=@"0"; } SKDatabase.h // // SKDatabase.h // Version 1.1 // // Created by Shannon Appelcline on 9/11/08. // Copyright 2008 __MyCompanyName__. All rights reserved. // #import &lt;UIKit/UIKit.h&gt; #import &lt;sqlite3.h&gt; @protocol SKDatabaseDelegate &lt;NSObject&gt; @optional - (void)databaseTableWasUpdated:(NSString *)table; @end @interface SKDatabase : NSObject { id&lt;SKDatabaseDelegate&gt; delegate; sqlite3 *dbh; BOOL dynamic; } @property (assign) id&lt;SKDatabaseDelegate&gt; delegate; @property sqlite3 *dbh; @property BOOL dynamic; - (id)initWithFile:(NSString *)dbFile; - (id)initWithDynamicFile:(NSString *)dbFile; - (void)close; - (sqlite3_stmt *)prepare:(NSString *)sql; - (id)lookupColForSQL:(NSString *)sql; - (NSDictionary *)lookupRowForSQL:(NSString *)sql; - (NSArray *)lookupAllForSQL:(NSString *)sql; - (int)lookupCountWhere:(NSString *)where forTable:(NSString *)table; - (int)lookupMax:(NSString *)key Where:(NSString *)where forTable:(NSString *)table; - (int)lookupSum:(NSString *)key Where:(NSString *)where forTable:(NSString *)table; - (void)insertArray:(NSArray *)dbData forTable:(NSString *)table; - (void)insertDictionary:(NSDictionary *)dbData forTable:(NSString *)table; - (void)updateArray:(NSArray *)dbData forTable:(NSString *)table; - (void)updateArray:(NSArray *)dbData forTable:(NSString *)table where:(NSString *)where; - (void)updateDictionary:(NSDictionary *)dbData forTable:(NSString *)table; - (void)updateDictionary:(NSDictionary *)dbData forTable:(NSString *)table where:(NSString *)where; - (void)updateSQL:(NSString *)sql forTable:(NSString *)table; - (void)deleteWhere:(NSString *)where forTable:(NSString *)table; - (BOOL)runDynamicSQL:(NSString *)sql forTable:(NSString *)table; @end SKDatabase.m // // SKDatabase.m // Version 1.1 // // Created by Shannon Appelcline on 9/11/08. // Copyright 2008 __MyCompanyName__. All rights reserved. // #import "SKDatabase.h" @implementation SKDatabase @synthesize delegate; @synthesize dbh; @synthesize dynamic; // Two ways to init: one if you're just SELECTing from a database, one if you're UPDATing // and or INSERTing - (id)initWithFile:(NSString *)dbFile { if (self = [super init]) { NSString *paths = [[NSBundle mainBundle] resourcePath]; NSString *path = [paths stringByAppendingPathComponent:dbFile]; int result = sqlite3_open([path UTF8String], &amp;dbh); NSAssert1(SQLITE_OK == result, NSLocalizedStringFromTable(@"Unable to open the sqlite database (%@).", @"Database", @""), [NSString stringWithUTF8String:sqlite3_errmsg(dbh)]); self.dynamic = NO; } return self; } - (id)initWithDynamicFile:(NSString *)dbFile { if (self = [super init]) { NSArray *docPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [docPaths objectAtIndex:0]; NSString *docPath = [docDir stringByAppendingPathComponent:dbFile]; NSFileManager *fileManager = [NSFileManager defaultManager]; if (![fileManager fileExistsAtPath:docPath]) { NSString *origPaths = [[NSBundle mainBundle] resourcePath]; NSString *origPath = [origPaths stringByAppendingPathComponent:dbFile]; NSError *error; int success = [fileManager copyItemAtPath:origPath toPath:docPath error:&amp;error]; NSAssert1(success,[NSString stringWithString:@"Failed to copy database into dynamic location"],error); } int result = sqlite3_open([docPath UTF8String], &amp;dbh); NSAssert1(SQLITE_OK == result, NSLocalizedStringFromTable(@"Unable to open the sqlite database (%@).", @"Database", @""), [NSString stringWithUTF8String:sqlite3_errmsg(dbh)]); self.dynamic = YES; } return self; } // Users should never need to call prepare - (sqlite3_stmt *)prepare:(NSString *)sql { const char *utfsql = [sql UTF8String]; sqlite3_stmt *statement; if (sqlite3_prepare([self dbh],utfsql,-1,&amp;statement,NULL) == SQLITE_OK) { return statement; } else { return 0; } } // Three ways to lookup results: for a variable number of responses, for a full row // of responses, or for a singular bit of data - (NSArray *)lookupAllForSQL:(NSString *)sql { sqlite3_stmt *statement; id result; NSMutableArray *thisArray = [NSMutableArray arrayWithCapacity:4]; if (statement = [self prepare:sql]) { while (sqlite3_step(statement) == SQLITE_ROW) { NSMutableDictionary *thisDict = [NSMutableDictionary dictionaryWithCapacity:4]; for (int i = 0 ; i &lt; sqlite3_column_count(statement) ; i++) { if (sqlite3_column_decltype(statement,i) != NULL &amp;&amp; strcasecmp(sqlite3_column_decltype(statement,i),"Boolean") == 0) { result = [NSNumber numberWithBool:(BOOL)sqlite3_column_int(statement,i)]; } else if (sqlite3_column_type(statement, i) == SQLITE_TEXT) { result = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement,i)]; } else if (sqlite3_column_type(statement,i) == SQLITE_INTEGER) { result = [NSNumber numberWithInt:(int)sqlite3_column_int(statement,i)]; } else if (sqlite3_column_type(statement,i) == SQLITE_FLOAT) { result = [NSNumber numberWithFloat:(float)sqlite3_column_double(statement,i)]; } else { result = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement,i)]; } if (result) { [thisDict setObject:result forKey:[NSString stringWithUTF8String:sqlite3_column_name(statement,i)]]; } } [thisArray addObject:[NSDictionary dictionaryWithDictionary:thisDict]]; [thisArray retain]; } } sqlite3_finalize(statement); return thisArray; } - (NSDictionary *)lookupRowForSQL:(NSString *)sql { sqlite3_stmt *statement; id result; NSMutableDictionary *thisDict = [NSMutableDictionary dictionaryWithCapacity:4]; if (statement = [self prepare:sql]) { if (sqlite3_step(statement) == SQLITE_ROW) { for (int i = 0 ; i &lt; sqlite3_column_count(statement) ; i++) { if (strcasecmp(sqlite3_column_decltype(statement,i),"Boolean") == 0) { result = [NSNumber numberWithBool:(BOOL)sqlite3_column_int(statement,i)]; } else if (sqlite3_column_type(statement, i) == SQLITE_TEXT) { result = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement,i)]; } else if (sqlite3_column_type(statement,i) == SQLITE_INTEGER) { result = [NSNumber numberWithInt:(int)sqlite3_column_int(statement,i)]; } else if (sqlite3_column_type(statement,i) == SQLITE_FLOAT) { result = [NSNumber numberWithFloat:(float)sqlite3_column_double(statement,i)]; } else { result = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement,i)]; } if (result) { [thisDict setObject:result forKey:[NSString stringWithUTF8String:sqlite3_column_name(statement,i)]]; } } } } sqlite3_finalize(statement); return thisDict; } - (id)lookupColForSQL:(NSString *)sql { sqlite3_stmt *statement; id result; if (statement = [self prepare:sql]) { if (sqlite3_step(statement) == SQLITE_ROW) { if (strcasecmp(sqlite3_column_decltype(statement,0),"Boolean") == 0) { result = [NSNumber numberWithBool:(BOOL)sqlite3_column_int(statement,0)]; } else if (sqlite3_column_type(statement, 0) == SQLITE_TEXT) { result = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement,0)]; } else if (sqlite3_column_type(statement,0) == SQLITE_INTEGER) { result = [NSNumber numberWithInt:(int)sqlite3_column_int(statement,0)]; } else if (sqlite3_column_type(statement,0) == SQLITE_FLOAT) { result = [NSNumber numberWithDouble:(double)sqlite3_column_double(statement,0)]; } else { result = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement,0)]; } } } sqlite3_finalize(statement); return result; } // Simple use of COUNTS, MAX, etc. - (int)lookupCountWhere:(NSString *)where forTable:(NSString *)table { int tableCount = 0; NSString *sql = [NSString stringWithFormat:@"SELECT COUNT(*) FROM %@ WHERE %@", table,where]; sqlite3_stmt *statement; if (statement = [self prepare:sql]) { if (sqlite3_step(statement) == SQLITE_ROW) { tableCount = sqlite3_column_int(statement,0); } } sqlite3_finalize(statement); return tableCount; } - (int)lookupMax:(NSString *)key Where:(NSString *)where forTable:(NSString *)table { int tableMax = 0; NSString *sql = [NSString stringWithFormat:@"SELECT MAX(%@) FROM %@ WHERE %@", key,table,where]; sqlite3_stmt *statement; if (statement = [self prepare:sql]) { if (sqlite3_step(statement) == SQLITE_ROW) { tableMax = sqlite3_column_int(statement,0); } } sqlite3_finalize(statement); return tableMax; } - (int)lookupSum:(NSString *)key Where:(NSString *)where forTable:(NSString *)table { int tableSum = 0; NSString *sql = [NSString stringWithFormat:@"SELECT SUM(%@) FROM %@ WHERE %@", key,table,where]; sqlite3_stmt *statement; if (statement = [self prepare:sql]) { if (sqlite3_step(statement) == SQLITE_ROW) { tableSum = sqlite3_column_int(statement,0); } } sqlite3_finalize(statement); return tableSum; } // INSERTing and UPDATing - (void)insertArray:(NSArray *)dbData forTable:(NSString *)table { // NSMutableString *sql = [NSMutableString stringWithCapacity:16]; // [sql appendFormat:@"INSERT INTO %@ (",table]; // // // for (int i = 0 ; i &lt; [dbData count] ; i++) { // NSLog(@"%@",[[dbData objectAtIndex:i] objectForKey:@"mid"]); // [sql appendFormat:@"%@",[[dbData objectAtIndex:i] objectForKey:@"key"]]; // if (i + 1 &lt; [dbData count]) { // [sql appendFormat:@", "]; // } // } // [sql appendFormat:@") VALUES("]; // for (int i = 0 ; i &lt; [dbData count] ; i++) { // if ([[[dbData objectAtIndex:i] objectForKey:@"value"] intValue]) { // [sql appendFormat:@"%@",[[[dbData objectAtIndex:i] objectForKey:@"value"] intValue]]; // } else { // [sql appendFormat:@"'%@'",[[dbData objectAtIndex:i] objectForKey:@"value"]]; // } // if (i + 1 &lt; [dbData count]) { // [sql appendFormat:@", "]; // } // } // [sql appendFormat:@")"]; // [self runDynamicSQL:sql forTable:table]; for(int i=0;i&lt;[dbData count];i++) { NSDictionary *dict=[dbData objectAtIndex:i]; NSMutableString *sql = [NSMutableString stringWithCapacity:16]; [sql appendFormat:@"INSERT INTO %@ (",table]; NSArray *dataKeys = [dict allKeys]; for (int i = 0 ; i &lt; [dataKeys count] ; i++) { [sql appendFormat:@"%@",[dataKeys objectAtIndex:i]]; if (i + 1 &lt; [dataKeys count]) { [sql appendFormat:@", "]; } } [sql appendFormat:@") VALUES("]; for (int i = 0 ; i &lt; [dataKeys count] ; i++) { if ([[dict objectForKey:[dataKeys objectAtIndex:i]] intValue]) { [sql appendFormat:@"%@",[dict objectForKey:[dataKeys objectAtIndex:i]]]; } else { [sql appendFormat:@"'%@'",[dict objectForKey:[dataKeys objectAtIndex:i]]]; } if (i + 1 &lt; [dict count]) { [sql appendFormat:@", "]; } } [sql appendFormat:@")"]; [self runDynamicSQL:sql forTable:table]; } } - (void)insertDictionary:(NSDictionary *)dbData forTable:(NSString *)table { NSMutableString *sql = [NSMutableString stringWithCapacity:16]; [sql appendFormat:@"INSERT INTO %@ (",table]; NSArray *dataKeys = [dbData allKeys]; for (int i = 0 ; i &lt; [dataKeys count] ; i++) { [sql appendFormat:@"%@",[dataKeys objectAtIndex:i]]; if (i + 1 &lt; [dbData count]) { [sql appendFormat:@", "]; } } [sql appendFormat:@") VALUES("]; for (int i = 0 ; i &lt; [dataKeys count] ; i++) { //if ([[dbData objectForKey:[dataKeys objectAtIndex:i]] intValue]) { // [sql appendFormat:@"%@",[dbData objectForKey:[dataKeys objectAtIndex:i]]]; // } else { [sql appendFormat:@"'%@'",[dbData objectForKey:[dataKeys objectAtIndex:i]]]; //} if (i + 1 &lt; [dbData count]) { [sql appendFormat:@", "]; } } [sql appendFormat:@")"]; [self runDynamicSQL:sql forTable:table]; } - (void)updateArray:(NSArray *)dbData forTable:(NSString *)table { [self updateArray:dbData forTable:table where:NULL]; } - (void)updateArray:(NSArray *)dbData forTable:(NSString *)table where:(NSString *)where { NSMutableString *sql = [NSMutableString stringWithCapacity:16]; [sql appendFormat:@"UPDATE %@ SET ",table]; for (int i = 0 ; i &lt; [dbData count] ; i++) { if ([[[dbData objectAtIndex:i] objectForKey:@"value"] intValue]) { [sql appendFormat:@"%@=%@", [[dbData objectAtIndex:i] objectForKey:@"key"], [[dbData objectAtIndex:i] objectForKey:@"value"]]; } else { [sql appendFormat:@"%@='%@'", [[dbData objectAtIndex:i] objectForKey:@"key"], [[dbData objectAtIndex:i] objectForKey:@"value"]]; } if (i + 1 &lt; [dbData count]) { [sql appendFormat:@", "]; } } if (where != NULL) { [sql appendFormat:@" WHERE %@",where]; } else { [sql appendFormat:@" WHERE 1",where]; } [self runDynamicSQL:sql forTable:table]; } - (void)updateDictionary:(NSDictionary *)dbData forTable:(NSString *)table { [self updateDictionary:dbData forTable:table where:NULL]; } - (void)updateDictionary:(NSDictionary *)dbData forTable:(NSString *)table where:(NSString *)where { NSMutableString *sql = [NSMutableString stringWithCapacity:16]; [sql appendFormat:@"UPDATE %@ SET ",table]; NSArray *dataKeys = [dbData allKeys]; for (int i = 0 ; i &lt; [dataKeys count] ; i++) { if ([[dbData objectForKey:[dataKeys objectAtIndex:i]] intValue]) { [sql appendFormat:@"%@=%@", [dataKeys objectAtIndex:i], [dbData objectForKey:[dataKeys objectAtIndex:i]]]; } else { [sql appendFormat:@"%@='%@'", [dataKeys objectAtIndex:i], [dbData objectForKey:[dataKeys objectAtIndex:i]]]; } if (i + 1 &lt; [dbData count]) { [sql appendFormat:@", "]; } } if (where != NULL) { [sql appendFormat:@" WHERE %@",where]; } [self runDynamicSQL:sql forTable:table]; } - (void)updateSQL:(NSString *)sql forTable:(NSString *)table { [self runDynamicSQL:sql forTable:table]; } - (void)deleteWhere:(NSString *)where forTable:(NSString *)table { NSString *sql = [NSString stringWithFormat:@"DELETE FROM %@ WHERE %@", table,where]; [self runDynamicSQL:sql forTable:table]; } // INSERT/UPDATE/DELETE Subroutines - (BOOL)runDynamicSQL:(NSString *)sql forTable:(NSString *)table { int result; //NSAssert1(self.dynamic == 1,[NSString stringWithString:@"Tried to use a dynamic function on a static database"],NULL); sqlite3_stmt *statement; if (statement = [self prepare:sql]) { result = sqlite3_step(statement); } sqlite3_finalize(statement); if (result) { if (self.delegate != NULL &amp;&amp; [self.delegate respondsToSelector:@selector(databaseTableWasUpdated:)]) { [delegate databaseTableWasUpdated:table]; } return YES; } else { return NO; } } // requirements for closing things down - (void)dealloc { [self close]; [delegate release]; [super dealloc]; } - (void)close { if (dbh) { sqlite3_close(dbh); } } @end </code></pre>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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