Onde posso encontrar o exemplo do arquivo de banco de dados SQLite ou o dump dele?

Question

Onde posso encontrar o exemplo do arquivo de banco de dados SQLite ou o dump dele?

Preciso mesmo de um ficheiro de base de dados sqlite para estudos. Eu estou criando uma aplicação em C# e eu preciso de um banco de dados com muitas tabelas, campo, vistas, índices, restrições e assim por diante. E eu não quero criá-lo eu mesmo usando a ferramenta de linha de comando sqlite.

Então eu suponho que pode ser alguém pode dizer onde eu posso encontrar tal arquivo, pode ser aplicações ou exemplos diferentes, ou até mesmo pode me enviar seu próprio arquivo de banco de dados. Agradeço qualquer ajuda.

66

sqlite

Author: Matt Lacey, 2011-04-27

Source

3 answers

Tente procurar por tutoriais sqlite-eles muitas vezes têm exemplos que você pode transferir (eg http://souptonuts.sourceforge.net/readme_sqlite_tutorial.html )

6

Author: whostolemyhat, 2011-04-27 10:27:19

Usei a operação sqlightCrud

Primeira classe de base de dados creat. pacote com.db;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import android.widget.Toast;

public class DataBaseSampleActivity {

    /** for database */ 
    static final String DataBaseName = "EmployeDB";

     /** for employee table */
    static final String EmployeTable = "Employees";
    static final String ColEmpID = "EmpId";
    static final String ColEmpName = "EmpName";
    static final String ColEmpAge = "EmpAge";
    static final String ColDept = "Dept";

     /** for department table */
    static final String DeptTable = "Department";
    static final String ColDeptID = "DeptId";
    static final String ColDeptName = "DeptName";

    public static final int DATABASE_VERSION = 2;

    //private static final String KEY_ROWID = "_id";

    private static final String EMPLOYEE_TABLE_CREATE ="Create table " + EmployeTable +
    //"(_id INTEGER UNIQUE," + [old code]
    "("+ColEmpID     + " INTEGER PRIMARY KEY AUTOINCREMENT," +
    ColEmpName   + " VARCHAR(15) ," +
    ColEmpAge    + " INT(15) ," +
    ColDept      + " VARCHAR(15)) ";

    private final Context context;
    private DatabaseHelper DBHelper;
    private SQLiteDatabase db;

    public DataBaseSampleActivity(Context ctx){
        Log.i("test****", "**test***");
        this.context = ctx;
        DBHelper = new DatabaseHelper(context);
    }
    private static class DatabaseHelper extends SQLiteOpenHelper{
        public DatabaseHelper(Context context){
            super(context, DataBaseName , null, DATABASE_VERSION);
            Log.i("context","context");
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
            // TODO Auto-generated method stub
            db.execSQL(EMPLOYEE_TABLE_CREATE);
            Log.i("************", "table created");
        }

        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            // TODO Auto-generated method stub
            Log.w("tag", "Upgrading database from version " + oldVersion + " to "+ newVersion + ", which will destroy all old data");
            db.execSQL("DROP TABLE IF EXISTS " + EmployeTable);
            onCreate(db);
        }

    };

    public DataBaseSampleActivity open() throws SQLException{
        db = DBHelper.getWritableDatabase();
        Log.i("open", "message");
        return this;
    }
    public void close(){
        DBHelper.close();
    }

    //public long insert(Integer empid, String empname, Integer empage, String empdept) {
    public long insert(String empname, Integer empage, String empdept) {
        Log.i("**** suruchitest **** ","*** test ***");
        ContentValues initialValues = new ContentValues();

        //initialValues.put(ColEmpID, empid);
        initialValues.put(ColEmpName, empname);
        initialValues.put(ColEmpAge, empage);
        initialValues.put(ColDept, empdept);

        return db.insert(EmployeTable, null, initialValues);
    }

    public Cursor getEmpValues(){
        Cursor mCursor = db.query(EmployeTable, null, null, null, null, null, null);
        return mCursor;
    }

    public boolean deleteEmpList(long rowId){
        Toast.makeText(context, "deleted", 2000).show();
        return db.delete(EmployeTable, ColEmpID +" = " + rowId, null) > 0;
    }
    public boolean updateEmplist(String empname, Integer empage, String empdept, Integer rowid){

        ContentValues initialValues = new ContentValues();
        Log.i("#####  "+rowid,""+empname+" "+empage+" "+empdept);

        //initialValues.put(ColEmpID, rowid);
        initialValues.put(ColEmpName,empname);
        initialValues.put(ColEmpAge,empage);
        initialValues.put(ColDept,empdept);

        try{
            int b = db.update(EmployeTable, initialValues,  ColEmpID+ " = " + rowid, null);
            Log.i("update", "up "+rowid+"  ddd   "+b);
            return true;
        }catch (Exception e){
            Log.d("asdfasdfsadfasdf", "_--___--__--_=-_");
            return false;
        }
    }
}




2. create Main Activity


package com.db;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {

    Button buttonsubmit;
    EditText empid,empname,empage,empdept;

    String emp_name, emp_dept;
    //Integer emp_id,emp_age;
    Integer emp_age;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);


        buttonsubmit = (Button) findViewById(R.id.btnSubmit);
        buttonsubmit.setOnClickListener(this);

       // empid =(EditText) findViewById(R.id.empid);
        empname =(EditText) findViewById(R.id.empname);
        empage =(EditText) findViewById(R.id.empage);
        empdept =(EditText) findViewById(R.id.empdpt);


    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
         DataBaseSampleActivity dbObj = new DataBaseSampleActivity(getApplicationContext());

           // String Emp_ids = empid.getText().toString();        
           // emp_id = Integer.parseInt(Emp_ids);
            //emp_id = empid.getText().toString();  

            String Emp_ages = empage.getText().toString();
            emp_age = Integer.parseInt(Emp_ages);

            //emp_age = empage.getText().toString();

            emp_name = empname.getText().toString();
            emp_dept = empdept.getText().toString();


         try {
                Log.i("try", "message");
                dbObj.open();
                //long temp = dbObj.insert(emp_id, emp_name, emp_age, emp_dept);
                long temp = dbObj.insert(emp_name, emp_age, emp_dept);
                //Toast.makeText(getApplicationContext(), "temp"+temp, 3000).show();
                dbObj.close();

                Intent intent = new Intent(this,ShowListView.class);
                startActivity(intent);
            } catch (Exception e) {
                // TODO: handle exception
                Log.i("catch", "message");
            }
    }
}





2. Create listclass to show tha data


package com.db;

import java.lang.reflect.Array;
import java.util.ArrayList;

import android.R.integer;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class ShowListView extends Activity {

    ArrayList<String> arrname = new ArrayList<String>();
    ArrayList<String> arrage = new ArrayList<String>();
    ArrayList<String> arrdept = new ArrayList<String>();
    ArrayList<Integer> arrRowId = new ArrayList<Integer>();
    ArrayList<Integer> arrDelId = new ArrayList<Integer>();
    Array[] arr;
    Button deleteBtn;
    Button btnadd;
    int index = 0;

    public int pos;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.emplist);

        //Toast.makeText(getApplicationContext(), "LIST VIEW", 5000).show();

        ToGetCursorValues();

    }

    public void ToGetCursorValues(){
        DataBaseSampleActivity db = new DataBaseSampleActivity(getApplicationContext());
        db.open();
        try {
            Cursor cur = db.getEmpValues();
            cur.moveToFirst();
            arrRowId.clear();
            arrname.clear();
            arrage.clear();
            arrdept.clear();
            while (!cur.isAfterLast()) {
                arrRowId.add(cur.getInt(cur.getColumnIndex(db.ColEmpID)));
                arrname.add(cur.getString(cur.getColumnIndex(db.ColEmpName)));
                arrage.add(cur.getString(cur.getColumnIndex(db.ColEmpAge)));
                arrdept.add(cur.getString(cur.getColumnIndex(db.ColDept)));
                cur.moveToNext();
            }
            //Log.i("#####","col "+arrlist.size());
            //Toast.makeText(getApplicationContext(), "* "+arrname.size()+","+arrage.size()+","+arrdept.size(), 5000).show();

            //Toast.makeText(getApplicationContext(), "***** "+arrRowId.get(0), 2000).show();

        } catch (Exception e) {
            // TODO: handle exception
        }


        ListView lst = (ListView) findViewById(R.id.mylist);
        lst.setAdapter(new ListAdapter(getApplicationContext()));

        db.close();
    }

    public class ListAdapter extends BaseAdapter implements OnCheckedChangeListener,OnClickListener{
        private LayoutInflater inflater = null;

        public ListAdapter(Context c){
            Log.i("Context","Context");
            inflater = LayoutInflater.from(c);
        }
        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            //return 0;
            return arrname.size();
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return 0;
        }
        class ViewHolder{
            TextView empnameview;
            TextView empageview;
            TextView empdeptview;
            CheckBox empchkbox;
        }

         // create a new ImageView for each item referenced by the Adapter
        public View getView(final int position, View convertView, ViewGroup parent) {


            Log.i("*view","view*");
            ViewHolder vh;
            //ImageView imageView;
            if (convertView == null) {  // if it's not recycled, initialize some attributes

                Log.i("*null1*","*null1*");

                vh = new ViewHolder();
                convertView = inflater.inflate(R.layout.customlist, null);

                Log.i("*null2*","*null2*");
                pos = position;
                vh.empnameview = (TextView) convertView.findViewById(R.id.ename);
                vh.empageview = (TextView) convertView.findViewById(R.id.eage);
                vh.empdeptview = (TextView) convertView.findViewById(R.id.edept);
                vh.empchkbox = (CheckBox) convertView.findViewById(R.id.ckekDelete);

                Log.i("*null3*","*null3*");

                vh.empnameview.setText(arrname.get(position));

                vh.empnameview.setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        // TODO Auto-generated method stub
                        Intent intent = new Intent(ShowListView.this,UpdateDB.class);
                        String name = arrname.get(position);
                        int age = Integer.parseInt(arrage.get(position));
                        String dept = arrdept.get(position);
                        int rowid = arrRowId.get(position);

                        intent.putExtra("KeyName" , name);
                        intent.putExtra("Keyage" , age);
                        intent.putExtra("Keydept" , dept);
                        intent.putExtra("Rowid", rowid);

                        startActivity(intent);
                    }
                });

                vh.empageview.setText(arrage.get(position));
                vh.empdeptview.setText(arrdept.get(position));
                vh.empchkbox.setOnCheckedChangeListener(new OnCheckedChangeListener() {

                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        // TODO Auto-generated method stub
                        //Toast.makeText(getApplicationContext(), "OnChecked"+position, 2000).show();
                        if(buttonView.isChecked()){
                            arrDelId.add(arrRowId.get(position));
                            //Toast.makeText(getApplicationContext(), "OnChecked"+position, 2000).show();

//                          DataBaseSampleActivity db = new DataBaseSampleActivity(getApplicationContext());
//                          db.open();
//                          db.deleteEmpList(arrRowId.get(position));
//                          Toast.makeText(getApplicationContext(), "delet", 3000).show();
//                          db.close();
//                                  
                        }
                        else{
                            for(int i=0;i<arrDelId.size();i++){
                                if(arrRowId.get(position) == arrDelId.get(i)){
                                    arrDelId.remove(i);
                                }
                            }
                        }
                    }
                });

                Log.i("******", "complete");

            } else {
                Log.i("*not*","*not*");
                vh = (ViewHolder) convertView.getTag();
            }

            deleteBtn = (Button) findViewById(R.id.delBtn);
            deleteBtn.setOnClickListener(this);

            btnadd = (Button) findViewById(R.id.addBtn);
            btnadd.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    Intent inte = new Intent(ShowListView.this, MainActivity.class);
                    startActivity(inte);
                }
            });

           // imageView.setImageResource(thumbarr[position]);
           return convertView;

        }

        public View getView1(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub

            for(int i=0;i<arrDelId.size();i++){
                //Toast.makeText(getApplicationContext(), "OnDeleteClick  "+i, 2000).show();
                DataBaseSampleActivity db = new DataBaseSampleActivity(getApplicationContext());
                db.open();
                db.deleteEmpList(arrDelId.get(i));
                //Toast.makeText(getApplicationContext(), "delet", 3000).show();
                db.close();
            }

            ToGetCursorValues();

        }
        @Override
        public void onCheckedChanged(CompoundButton buttonView,
                boolean isChecked) {
            // TODO Auto-generated method stub

        }


    }

}


3. for update 

package com.db;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class UpdateDB extends Activity implements OnClickListener{

    Intent intnt;
    EditText editname,editage,editdept;
    Button updateBtn;
    int row_id;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        editname = (EditText) findViewById(R.id.empname);
        editage = (EditText) findViewById(R.id.empage);
        editdept = (EditText) findViewById(R.id.empdpt);

        updateBtn = (Button) findViewById(R.id.btnSubmit);
        updateBtn.setText("Update");

        intnt = getIntent();

        editname.setText(intnt.getStringExtra("KeyName"));
        editage.setText(""+intnt.getIntExtra("Keyage",0));
        editdept.setText(intnt.getStringExtra("Keydept"));

        row_id = intnt.getIntExtra("Rowid", 0);

        updateBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(getApplicationContext(), "update", 3000).show();
                DataBaseSampleActivity db = new DataBaseSampleActivity(getApplicationContext());
                db.open();
                String empname = editname.getText().toString();
                int empage = Integer.parseInt(editage.getText().toString());
                String empdept = editdept.getText().toString();
                //db.deleteEmpList(row_id);
                db.updateEmplist(empname, empage, empdept,row_id);
                //Toast.makeText(getApplicationContext(), "delet", 3000).show();
                db.close();
                Intent list = new Intent(UpdateDB.this,ShowListView.class);
                startActivity(list);
            }
        });

       // Toast.makeText(getApplicationContext(), "update "+intnt.getIntExtra("Keyage",0), 3000).show();
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

    }

}

1

Author: sachin surjan, 2012-10-20 05:55:11

score 79 · Accepted Answer

Há uma boa base de dados de amostras chamada Chinook. Está a tentar ser o exemplo moderno para substituir NorthWind. Eles têm versões para diferentes servidores de banco de dados, incluindo SQLite.

Homepage, Diagrama de DB, etc.. http://chinookdatabase.codeplex.com/
Github (parece mais actualizado do que o CodePlex) https://github.com/lerocha/chinook-database
última transferência SQLite até à data da publicação: https://chinookdatabase.codeplex.com/releases/view/55681#fileDownload6
Obter a base de dados de amostras SQLite para obter o ficheiro da base de dados Chinook directamente http://www.sqlitetutorial.net/sqlite-sample-database/
mais projectos relacionados com SQLite e amostras sobre CodePlex http://www.codeplex.com/site/search?query=sqlite&ac=8

Verifique também esta amostra nos fóruns do cliente SQLite. net (anexados à primeira publicação)

~~obter o projeto Microsoft EFQuerySamples para trabalhar com o SQLite~~

Talvez uma ferramenta GUI para criar coisas de banco de dados torne o início mais fácil, Verifique este, livre para uso pessoal

http://www.sqliteexpert.com/

Pessoalmente, crio bases de dados SQLite para testar mapeamentos Nhibernados. Normalmente eu crio minhas classes e mapeamentos, em seguida, usar os mapeamentos para gerar esquemas para um novo arquivo SQLite (ou na base de dados de memória, mais frequentemente) e usar isso. Mais Os artigos de introdução nibernate também fazem isso.