### Quickstart Commands

Source: https://github.com/dbos-project/voltdb/blob/master/examples/geospatial/README.md

Commands to initialize, start the database, load schema, preload data, and run the client application.

```bash
voltdb init
voltdb start
```

```bash
sqlcmd < ddl.sql
```

```bash
csvloader -f advertisers.csv advertisers
```

```bash
./run.sh client
```

--------------------------------

### Quickstart Commands

Source: https://github.com/dbos-project/voltdb/blob/master/examples/metrocard/README.md

Commands to initialize, start the database, load the schema, preload data, and run the demo client application.

```bash
voltdb init
voltdb start
```

```bash
sqlcmd < ddl.sql
```

```bash
csvloader --file data/stations.csv stations
```

```bash
./run.sh client
```

```bash
./run.sh webserver
```

--------------------------------

### Quickstart Commands

Source: https://github.com/dbos-project/voltdb/blob/master/examples/bank-offers/README.md

Commands to initialize, start, and load the schema for the VoltDB database, and then run the demo client application.

```bash
voltdb init
voltdb start
sqlcmd < ddl.sql
./run.sh client
```

--------------------------------

### Quickstart Commands

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/README.md

Commands to set up and run the fraud detection example application.

```bash
./run.sh server
./run.sh init
./run.sh train
./run.sh npminstall
./run.sh nodeserver
```

--------------------------------

### Install and run serve

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

Installs the serve package globally and starts a static server for the build directory.

```sh
npm install -g serve
serve -s build
```

--------------------------------

### Running the VoltDB Client API Example

Source: https://github.com/dbos-project/voltdb/blob/master/examples/user-hits/README.md

Commands to start the server, initialize the database, and run the client test case.

```bash
./run.sh server
./run.sh init
./run.sh run-client
```

--------------------------------

### Start the node server

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/README.md

After running './run.sh server' and './run.sh init', use this command to start the node server. A window will pop up automatically. Changes to dev files will be hot-compiled.

```bash
./run.sh nodeserver
```

--------------------------------

### Example Server Start Commands

Source: https://github.com/dbos-project/voltdb/blob/master/tests/test_apps/priority/README.txt

Commands to start the VoltDB server with different priority configurations.

```shell
./run.sh server_no_priority
```

```shell
./run.sh server_no_priority
```

```shell
./run.sh server_pure_priority
```

--------------------------------

### Install npm dependencies

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/README.md

Run this command to download the necessary npm dependencies for the project. This only needs to be run once.

```bash
./run.sh npminstall
```

--------------------------------

### Example client call with parameters

Source: https://github.com/dbos-project/voltdb/blob/master/examples/simple/README.md

Example of calling the client with specific hostname and number of procedure calls.

```shell
./run_client.sh localhost 1000000
```

--------------------------------

### Initializing Test Environment

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

Example of setting up a `src/setupTests.js` file to provide global setup or mock browser APIs for tests.

```javascript
const localStorageMock = {
  getItem: jest.fn(),
  setItem: jest.fn(),
  clear: jest.fn()
};
global.localStorage = localStorageMock
```

--------------------------------

### Start a 3-node VoltDB cluster

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/RunAnExampleInACluster.md

Command to start a 3-node VoltDB cluster, specifying the server count and hostnames.

```bash
voltdb start -c 3 -H voltserver1,voltserver2,voltserver3 &
```

--------------------------------

### Run script commands

Source: https://github.com/dbos-project/voltdb/blob/master/examples/user-hits/README.md

Commands to start the VoltDB server, initialize the database schema, and run the producer test case.

```bash
./run.sh server
./run.sh init
./run.sh run-producer
```

--------------------------------

### VoltDB Initialization and Start with Options

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/RunServerInTheBackground.md

These commands demonstrate starting VoltDB with common options, such as forcing initialization and specifying a deployment configuration file, and starting with cluster node count and coordinator hosts.

```bash
voltdb init --force -C deployment.xml
voltdb start -c [cluster-node-count] -H coordinator1,coordinator2
```

--------------------------------

### Adding a table to ddl.sql

Source: https://github.com/dbos-project/voltdb/blob/master/examples/simple/README.md

Example of adding a new table definition to the ddl.sql file.

```sql
CREATE TABLE my_table (
  id BIGINT NOT NULL,
  val BIGINT
);
PARTITION TABLE my_table ON COLUMN id;
CREATE INDEX my_table_idx1 ON my_table (id);
```

--------------------------------

### VoltDB Initialization and Start Commands

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/EnableAuthentication.md

Commands to initialize VoltDB with a deployment file and start the server.

```bash
voltdb init --force -C deployment.xml
voltdb start
```

--------------------------------

### Create View

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of creating a view named 'registrations_by_zipcode'.

```sql
CREATE VIEW registrations_by_zipcode (
    zipcode, registered_voters
) AS
SELECT zipcode, count(*) from voters where registration=1 GROUP BY zipcode;
```

--------------------------------

### Example Usage

Source: https://github.com/dbos-project/voltdb/blob/master/tools/zk_tools/zkdu/README.md

This example shows how to use the zkdu command to display disk usage for ZooKeeper directories.

```bash
zkdu /db/sync_snapshots/
zkdu /db/synchronized_states/
zkdu /db/topology/
zkdu /db/unfaulted_hosts/
zkdu /zookeeper/quota/
```

--------------------------------

### Setting up PATH environment variable

Source: https://github.com/dbos-project/voltdb/blob/master/examples/simple/README.md

Example of how to add the VoltDB bin subdirectory to your PATH environment variable.

```shell
export PATH="$PATH:$HOME/voltdb-ent-8.2/bin"
```

--------------------------------

### Starting Cluster 1

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/xdcr_tutorial.md

Command to start the nodes for the first cluster.

```bash
voltdb start --host="node1,node2,node3"
```

--------------------------------

### Start Cluster 2

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/xdcr_tutorial.md

Command to start Cluster 2 on multiple nodes.

```bash
voltdb start --host="node4,node5,node6"
```

--------------------------------

### Running the client with optional parameters

Source: https://github.com/dbos-project/voltdb/blob/master/examples/simple/README.md

Optional parameters for running the client, specifying hostname and number of procedure calls.

```shell
./run_client.sh {hostname} {number of procedure calls}
```

--------------------------------

### Start VoltDB Cluster

Source: https://github.com/dbos-project/voltdb/blob/master/tests/test_apps/ycsb/README.md

Example command to start a VoltDB cluster with 3 nodes, assuming host0 is the leader.

```bash
./run.sh server host0
```

--------------------------------

### Usage and Parameters

Source: https://github.com/dbos-project/voltdb/blob/master/tools/postinstall-script/README.md

Shows how to run the postlaunch script and describes its command-line parameters.

```shell
./postlaunch.sh [--user username] [--password password] [--port portnumber]
```

--------------------------------

### Starting additional clusters

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/xdcr_tutorial.md

This command starts additional clusters. It's important to note that only one database can join the XDCR network at a time, and you must wait for initial synchronization before starting the next.

```bash
voltdb start --host="node1,node2,node3"
or
voltdb start --host="node4,node5,node6"
```

--------------------------------

### Setting up VoltDB CLI path and checking version

Source: https://github.com/dbos-project/voltdb/blob/master/README.md

Demonstrates how to add the VoltDB bin directory to the system's PATH and check the installed version.

```bash
PATH="$PATH:$(pwd)/bin/"
voltdb --version
```

--------------------------------

### DR Table Declaration

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/xdcr_tutorial.md

Example of how to declare a DR table in the schema.

```sql
DR TABLE table_name_here;
```

--------------------------------

### How to run this

Source: https://github.com/dbos-project/voltdb/blob/master/tests/test_apps/polygonBenchmark/README.md

Instructions on how to initialize and start the VoltDB server, and then run the benchmark script.

```bash
voltdb init --force
voltdb start
```

```bash
./runbenchmark.sh
```

--------------------------------

### Run the server and demo

Source: https://github.com/dbos-project/voltdb/blob/master/tests/test_apps/osm-import/README.md

Starts the local server and runs the OSM import demo.

```bash
osm-import> ./run.sh
```

--------------------------------

### Running the Example Application

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/bulkloader/README.md

Bash script to compile and run the ExampleApp.java, which demonstrates both default insert and bulk loader performance.

```bash
./run_client.sh
```

--------------------------------

### Explaining Stored Procedures

Source: https://github.com/dbos-project/voltdb/blob/master/src/frontend/org/voltdb/utils/SQLCommandReadme.txt

Example of using the EXPLAINPROC command to get execution plans for a stored procedure.

```sql
explainproc Vote;
```

--------------------------------

### Referencing Environment Variables in HTML

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

Example of how to reference environment variables starting with REACT_APP_ directly in the public/index.html file.

```html
<title>%REACT_APP_WEBSITE_NAME%</title>
```

--------------------------------

### VoltDB Deployment File Configuration for XDCR

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/xdcr_tutorial.md

An example snippet from a VoltDB deployment file showing the configuration for an XDCR role and its connection sources.

```xml
<dr id="1" role="xdcr">
        <connection source="server_2,server_3" />
    </dr>
```

--------------------------------

### Creating a Client Instance and Connecting

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/bulkloader/README.md

This snippet shows the initial steps to create a VoltDB client instance and establish a connection to the database.

```java
org.voltdb.client.Client client;
client = ClientFactory.createClient();
client.createConnection("localhost");
```

--------------------------------

### Minimalist Printer Event Listener

Source: https://github.com/dbos-project/voltdb/blob/master/third_party/cpp/googletest/googletest/docs/advanced.md

An example of a custom event listener subclassing EmptyTestEventListener to handle test start, test part result, and test end events.

```c++
class MinimalistPrinter : public ::testing::EmptyTestEventListener {
    // Called before a test starts.
    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
      printf("*** Test %s.%s starting.\n",
             test_info.test_suite_name(), test_info.name());
    }

    // Called after a failed assertion or a SUCCESS().
    virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result) {
      printf("%s in %s:%d\n%s\n",
             test_part_result.failed() ? "*** Failure" : "Success",
             test_part_result.file_name(),
             test_part_result.line_number(),
             test_part_result.summary());
    }

    // Called after a test ends.
    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
      printf("*** Test %s.%s ending.\n",
             test_info.test_suite_name(), test_info.name());
    }
  };
```

--------------------------------

### Create a Database Instance

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/DocumentYourDatabase.md

Steps to prepare a directory for a database instance, including creating folders for the instance and snapshots, and copying necessary configuration files.

```bash
mkdir $HOME/voltdb_instance
mkdir $HOME/voltdb_saved_snapshots
```

```bash
# on each host
cd $HOME/voltdb_instance
voltdb init --force --config deployment.xml --license license.xml
```

--------------------------------

### Using an image in CSS with Webpack

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

This example shows how Webpack can handle image imports within CSS files. Webpack finds relative module references (starting with './') and replaces them with the final paths from the compiled bundle.

```css
.Logo {
  background-image: url(./logo.png);
}
```

--------------------------------

### Running the webserver on a cluster

Source: https://github.com/dbos-project/voltdb/blob/master/examples/bank-offers/README.md

Command to run the webserver on a VoltDB cluster node.

```bash
./run.sh webserver
```

--------------------------------

### Install jsoncpp library

Source: https://github.com/dbos-project/voltdb/blob/master/third_party/cpp/jsoncpp/CMakeLists.txt

Installs the jsoncpp library targets to the appropriate directories based on the CMake installation variables.

```cmake
install( TARGETS jsoncpp_lib ${INSTALL_EXPORT}
          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
```

--------------------------------

### Compiling Java source code

Source: https://github.com/dbos-project/voltdb/blob/master/examples/bank-offers/README.md

Command to compile Java source code if running the example from a source build.

```bash
run.sh jars
```

--------------------------------

### Delete Only Table

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of dropping only a table.

```sql
DROP TABLE voters;
```

--------------------------------

### Drop Stored Procedure

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of dropping a stored procedure.

```sql
DROP PROCEDURE procedureVotersA;
```

--------------------------------

### run.sh script options

Source: https://github.com/dbos-project/voltdb/blob/master/examples/bank-offers/README.md

Various options for the run.sh script to manage the VoltDB example.

```bash
- *run.sh* : start the server
- *run.sh server* : start the server
- *run.sh init* : compile stored procedures and load the schema and stored procedures
- *run.sh jars* : compile all Java clients and stored procedures into two Java jarfiles
- *run.sh client* : start the client, more than 1 client is permitted
- *run.sh clean* : remove compilation and runtime artifacts
- *run.sh cleanall* : remove compilation and runtime artifacts *and* the two included jarfiles
- *run.sh webserver* : serve the web directory over http on port 8081
```

--------------------------------

### Execute Stored Procedure

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of executing a stored procedure.

```sql
exec procedureVotersA;
```

--------------------------------

### Run Demo Client and Web Server

Source: https://github.com/dbos-project/voltdb/blob/master/examples/uniquedevices/README.md

Scripts to preload data, run the demo client, and start the web server.

```bash
./run.sh client
```

```bash
./run.sh webserver
```

--------------------------------

### Install VoltDB

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/DocumentYourDatabase.md

Steps to install VoltDB, create a user, extract the archive, set up a symlink, and add VoltDB to the PATH.

```bash
cd /home/voltdb
tar -xzvf LINUX-voltdb-ent-8.3.tar.gz
ln -s voltdb-ent-8.3 voltdb
export PATH=$PATH:$HOME/voltdb/bin
```

```bash
voltdb --version
```

--------------------------------

### Index Creation

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of creating an index on the 'voters' table.

```sql
CREATE INDEX voters_index ON voters ( zipcode )
```

--------------------------------

### Run the client application

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/RunAnExampleInACluster.md

Command to execute the client script after configuring server connections.

```bash
./run.sh client
```

--------------------------------

### Delete View and Table

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of dropping a view and a table.

```sql
Drop view registrations_by_zipcode;
DROP TABLE voters;
```

--------------------------------

### Create Table

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of creating a table named 'voters'.

```sql
CREATE TABLE voters (
    name varchar(50),
    zipcode varchar(5),
    registration smallint
);
```

--------------------------------

### run.sh Script Options

Source: https://github.com/dbos-project/voltdb/blob/master/examples/callcenter/README.md

Various options for the run.sh script.

```bash
- *run.sh* : start the server
- *run.sh server* : start the server
- *run.sh init* : load the schema and stored procedures
- *run.sh jars* : compile all Java clients and stored procedures into two Java jarfiles
- *run.sh client* : start the client
- *run.sh clean* : remove compilation and runtime artifacts
- *run.sh cleanall* : remove compilation and runtime artifacts *and* the two included jarfiles
- *run.sh webserver* : serve the web directory over http on port 8081
```

--------------------------------

### Install Java JDK

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/DocumentYourDatabase.md

Command to install OpenJDK 8.

```bash
apt-get install openjdk-8-jdk
```

--------------------------------

### Initialize and start VoltDB

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/kafka_kerberos/README.md

Commands to initialize and start VoltDB with Kerberos client configuration.

```bash
export VOLTDB_OPTS="-Djava.security.auth.login.config=/home/opt/kerberos/voltdb.lan.jaas.kafka_client.conf -Djava.security.krb5.conf=/home/opt/kerberos/voltdb.lan.kafka.krb5.conf  -Dsun.security.krb5.rcache=none"
voltdb init --config=/home/zhe/workspace/deployment/depl.xml --force
voltdb start  --count=1 -H volt3d
```

--------------------------------

### Example Deployment File

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/EnableAuthentication.md

A basic XML deployment file that enables HTTP and JSON API.

```xml
<?xml version="1.0"?>
<deployment>
   <cluster hostcount="1" />
   <httpd enabled="true">
      <jsonapi enabled="true" />
   </httpd>
</deployment>
```

--------------------------------

### Serialized Class Example

Source: https://github.com/dbos-project/voltdb/blob/master/third_party/java/src/org/apache/jute_voltpatches/package.html

The XML-RPC serialized representation of the example class.

```XML
<value>
  <struct>
    <member>
      <name>MY_INT</name>
      <value><i4>5</i4></value>
    </member>
    <member>
      <name>MY_VEC</name>
      <value>
        <array>
          <data>
            <value><ex:float>0.1</ex:float></value>
            <value><ex:float>-0.89</ex:float></value>
            <value><ex:float>2.45e4</ex:float></value>
          </data>
        </array>
      </value>
    </member>
    <member>
      <name>MY_BUF</name>
      <value><string>%00\n\tabc%25</string></value>
    </member>
  </struct>
</value>
```

--------------------------------

### Install source-map-explorer

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

Installs the source-map-explorer package using npm.

```sh
npm install --save source-map-explorer
```

--------------------------------

### Project Setup and Minimum Required Version

Source: https://github.com/dbos-project/voltdb/blob/master/third_party/cpp/googletest/googlemock/CMakeLists.txt

Sets the project name, version, languages, and the minimum required CMake version. Also configures ccache if available.

```cmake
if (CMAKE_VERSION VERSION_LESS 3.0)
  project(gmock CXX C)
else()
  cmake_policy (SET CMP0048 NEW)
  project(gmock VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
endif ()
cmake_minimum_required(VERSION 2.6.4)

find_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
endif()
```

--------------------------------

### run.sh Script Options

Source: https://github.com/dbos-project/voltdb/blob/master/examples/voltkv/README.md

Various options for the run.sh script to manage the VoltDB server, schema, clients, and cleanup.

```bash
- run.sh : start the server
- run.sh server : start the server
- run.sh init : compile stored procedures and load the schema and stored procedures
- run.sh jars : compile all Java clients into a Java jarfile
- run.sh client : start the async client benchmark, initialize the given number of key-value pairs (puts) if needed, and begin normal client processing (gets and puts)
- run.sh async-benchmark : same as run.sh client
- run.sh sync-benchmark : start the multi-threaded sync client,  initialize the given number of key-value pairs (puts) if needed, and begin normal client processing (gets and puts)
- run.sh jdbc-benchmark : start the JDBC client benchmark
- run.sh clean : remove compiled and other runtime artifacts
- run.sh cleanall : remove compilation and runtime artifacts *and* the included client jarfile
```

--------------------------------

### Install Styleguidist

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

Install Styleguidist using npm or yarn.

```sh
npm install --save react-styleguidist
```

```sh
yarn add react-styleguidist
```

--------------------------------

### Install jest-enzyme

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

Command to install jest-enzyme using npm.

```sh
npm install --save jest-enzyme
```

--------------------------------

### Client Behavior Options - Simulation Parameters

Source: https://github.com/dbos-project/voltdb/blob/master/examples/windowing/README.md

Parameters affecting the simulation behavior, such as row limits and age.

```bash
--maxrows=0 \                 (set to nonzero to limit by rowcount)
--historyseconds=30 \         (set to nonzero to limit by age)
--inline=false \              (set to true to delete co-txn with inserts)
--deletechunksize=100 \       (target max number of rows to delete per txn)
--deleteyieldtime=100 \       (time to wait between non-inline deletes)
```

--------------------------------

### Install npm-run-all with yarn

Source: https://github.com/dbos-project/voltdb/blob/master/examples/fraud-detection/web-node/fraud-detection-web/README.md

Install npm-run-all using yarn.

```sh
yarn add npm-run-all
```

--------------------------------

### Installation Targets

Source: https://github.com/dbos-project/voltdb/blob/master/src/ee/CMakeLists.txt

Specifies where to install the VoltDB library and executables.

```cmake
INSTALL(TARGETS ${VOLTDB_LIBNAME}
  DESTINATION ${CMAKE_BINARY_DIR}/nativelibs)

INSTALL(TARGETS ${VOLTDB_IPCRUN_NAME}
  DESTINATION ${CMAKE_BINARY_DIR}/prod)
```

--------------------------------

### Initializing and starting a single-server VoltDB database

Source: https://github.com/dbos-project/voltdb/blob/master/README.md

Commands to initialize a new VoltDB database directory and start a single-server instance, with options for specifying the directory and running in the background.

```bash
voltdb init [--dir ~/mydb]
voltdb start [--dir ~/mydb] [--background]
```

--------------------------------

### Start Confluent Applications

Source: https://github.com/dbos-project/voltdb/blob/master/tests/test_apps/topicbenchmark2/README.md

Command to start the Confluent applications required for TopicBenchmark2 tests.

```bash
confluent local start
```

--------------------------------

### Loading compiled procedures

Source: https://github.com/dbos-project/voltdb/blob/master/examples/simple/README.md

Command to load compiled Java procedures into the database using sqlcmd.

```sql
sqlcmd
1> load classes procedures/procedures.jar;
```

--------------------------------

### Standalone CMake Project Setup (with samples)

Source: https://github.com/dbos-project/voltdb/blob/master/third_party/cpp/googletest/googletest/README.md

Commands to set up a standalone CMake project for Google Test, enabling sample builds.

```bash
cmake -Dgtest_build_samples=ON ${GTEST_DIR}
```

--------------------------------

### Class Definition Example

Source: https://github.com/dbos-project/voltdb/blob/master/third_party/java/src/org/apache/jute_voltpatches/package.html

An example of a class definition with different data types.

```Java
class {
  int           MY_INT;            // value 5
  vector MY_VEC;            // values 0.1, -0.89, 2.45e4
  buffer        MY_BUF;            // value '\00\n\tabc%'
}
```

--------------------------------

### Create Stored Procedure

Source: https://github.com/dbos-project/voltdb/blob/master/tests/geb/vmc/src/resources/sqlQueryDbMonitor.txt

Example of creating a stored procedure named 'procedureVotersA'.

```sql
CREATE PROCEDURE procedureVotersA AS SELECT * FROM voters;
```

--------------------------------

### Recall Command Example

Source: https://github.com/dbos-project/voltdb/blob/master/src/frontend/org/voltdb/utils/SQLCommandReadme.txt

Example of recalling a specific command by its line number.

```sqlcmd
recall 123
```

--------------------------------

### Configure NTP

Source: https://github.com/dbos-project/voltdb/blob/master/examples/HOWTOs/DocumentYourDatabase.md

Example configuration for NTP to synchronize with Google's time servers.

```bash
sudo vi /etc/ntp.conf

server time1.google.com
server time2.google.com
server time3.google.com
```