Give a brief high level system overview and its purpose using the provided context for this program, keep it detailed, concise and confident.

Based on the provided code module, generate a comprehensive analysis as follows:

- **Module Name**: Identify the module with fullpath for module file.
- **Primary Objectives**: Define its purpose.
- **Critical Functions**: List main methods/functions and their roles.
- **Key Variables**: Point out essential variables.
- **Interdependencies**: Note interactions with other system components.
- **Core vs. Auxiliary Operations**: Differentiate main operations from auxiliary ones.
- **Operational Sequence**: Describe any distinct flow.
- **Usage**: Discuss how it is used.
- **Assumptions**: List any assumptions made.

Create a basic level-1 Data Flow Diagram (DFD) in Mermaid js syntax. Do not include parameters in function calls.

# Mermaid Flowchart Syntax Cheat Sheet

This cheat sheet provides a concise reference for the syntax used in Mermaid flowcharts. Mermaid flowcharts enable the creation of complex diagrams using simple text-based language.

## Basic Structure

- **Nodes**: Represented by geometric shapes.
- **Edges**: Arrows or lines connecting nodes.

## Syntax for Nodes

1. **Standard Node**: `id`

   flowchart LR id

2. **Node with Text**: `id1[Text]`

   flowchart LR id1\[This is text\]

3. **Node Shapes**:
   - **Round Edges**: `id1(Text)`
   - **Stadium Shape**: `id1([Text])`
   - **Subroutine Shape**: `id1[[Text]]`
   - **Cylindrical**: `id1[(Text)]`
   - **Circle**: `id1((Text))`
   - **Asymmetric**: `id1>This is text]`
   - **Rhombus**: `id1{Text}`
   - **Hexagon**: `id1{{Text}}`
   - **Parallelogram**: `id1[/Text/]`
   - **Alternate Parallelogram**: `id1[\Text\]`
   - **Trapezoid**: `id1[/Text\]`
   - **Alternate Trapezoid**: `id1[\Text/]`
   - **Double Circle**: `id1(((Text)))`

## Syntax for Edges

 1. **Standard Arrow**: `A --> B`
 2. **Open Link**: `A --- B`
 3. **Text on Links**: `A -- Text --> B` or `A ---|Text|B`
 4. **Dotted Link**: `A -.-> B`
 5. **Dotted Link with Text**: `A -. Text .-> B`
 6. **Thick Link**: `A ==> B`
 7. **Thick Link with Text**: `A == Text ==> B`
 8. **Invisible Link**: `A ~~~ B`
 9. **Chaining of Links**: `A -- text --> B -- text2 --> C`
10. **Multi Directional Arrows**: `A <--> B`, `A o--o B`, `A x--x B`

## Special Characters and Unicode

- Enclose troublesome characters or Unicode text in quotes: `id1["Text (with special characters)"]`

## Subgraphs

- Basic structure:

  subgraph title
      node definitions
  end

## Styling

- **Styling Nodes and Edges**: Use `style` keyword.
- **Classes**: Define with `classDef` and apply with `class` or `:::` operator.
- **CSS Classes**: Define in HTML and apply in Mermaid.
- **Default Class**: Applies to all unstyled elements.

## Interaction and Comments

- **Interactive Elements**: Use `click` keyword for binding events.
- **Comments**: Preface with `%%` to ignore in rendering.

## Configuration

- **Renderer**: `%%{init: {"flowchart": {"defaultRenderer": "elk"}} }%%`
- **Width**: Adjust with `mermaid.flowchartConfig = { width: '100%' }`

## Example Usage

Given your example, here's the breakdown:

flowchart LR A\[PostgresStorageConnector\] -- insert --> B((Database)) A -- get --> B A -- delete --> B A -- query --> B A -- get_all --> B C\[LanceDBConnector\] -- insert --> B C -- get --> B C -- delete --> B() C -- query --> B C -- get_all --> B

- `A[PostgresStorageConnector]` and `C[LanceDBConnector]`: Nodes with text.
- `B((Database))`: Circle node with text.
- `-- insert -->`: Arrow with text.
- `-- get -->`, `-- delete -->`, `-- query -->`, `-- get_all -->`: Standard arrows.

This syntax is valid in Mermaid and will create a flowchart with nodes and directed edges as described.