Document and NoSQL

Cassandra

Cassandra runs bounded CQL reads over the native binary protocol and adds partition-key query helpers, tracing, storage health, grants, and snapshot/import/export planning.

Available for CQL reads; writes and administration are guarded12 minDesktop

Prerequisites

Install the current DataPad++ desktop pre-release on Windows, macOS, or Linux.
Have the endpoint, database file, or cloud account details for a Cassandra datastore you are authorized to use. Start with least-privileged, read-only access.
Keep an independent backup before enabling edits, administration, restore, or transfer execution.

Connect and run a safe query

1
Create the connection
Open Library, choose Create connection, and select Cassandra and a supported Connection method tab.
2
Test and save
Complete the applicable fields and enable Read-only connection. Test connection when available; new local files and pending secondary credential changes must be saved first. Review runtime limitations and warnings.
Cassandra connection setup. The Cassandra connection dialog with supported method tabs and illustrative, non-secret settings. Expand optional sections and review runtime limitations before saving. Open full size
3
Open the native explorer
Use Save Connection, or Create Database and Save Connection for a new local file, then open the Cassandra Explorer where supported.
4
Select a scope
Select the database / container scope that should be attached to the new tab.
5
Run a bounded read
Open a query tab, paste the bounded read-only sample below, and choose Run or press Ctrl/Cmd+Enter.
Cassandra native workflow. A representative Cassandra explorer and bounded read-only workflow. Replace the example objects with names from your datastore. Open full size
6
Inspect the result
Inspect Results, Messages, History, and Details; dock the panel on the bottom or right as needed.
7
Export when needed
Export only the required rows after reviewing format, destination, and redaction options.
8
Open diagnostics or transfers
Open Diagnostics or Transfers from the drawer/status bar and treat disabled reasons as capability boundaries, not transient errors.

Connection fields

Field	Required	Purpose	Safe example
Name	Yes	A clear profile name, without credentials.	Cassandra development
Connection method	Yes	Choose a supported tab. The fields below apply only to the selected method and deployment.	Connection fields / Connection string
Environment	No	Attach the intended variable and safety context.	Local development
Read-only connection	No	Enable for initial exploration. This does not make pre-release software safe for production workloads.	Enabled
Host / Port	No	Endpoint for a fields-based connection. Follow the selected deployment and runtime limitations; MongoDB SRV does not use an explicit port.	localhost / engine default
Database / default scope	No	Initial scope for browsing, where supported.	catalog
Complete connection string	Yes	Required in Connection string mode only. Saved unchanged as one vault secret with Save Connection. Blank keeps an existing stored value.	Paste your complete provider string; do not share it
Username	No	Authentication identity for the selected method.	catalog_reader
Password	No	Required only when the chosen authentication needs it. Save Connection stores changes; blank preserves an existing value, and Reveal… explicitly discloses it.	Stored in the desktop OS vault
Contact points	No	General. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Keyspace	No	General. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Local datacenter	No	General. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Compression	No	Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	none / lz4 / snappy
Consistency	No	Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	one / two / three / quorum / all / local-quorum / each-quorum / local-one
Serial consistency	No	Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	serial / local-serial
Use TLS	No	TLS & certificates. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
CA certificate	No	TLS & certificates. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Client certificate	No	TLS & certificates. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Client key	No	TLS & certificates. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Page size	No	Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Connect timeout (ms)	No	Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default
Request timeout (ms)	No	Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default.	Driver default

Run the sample query

Cassandra read-only example

SELECT product_id, product_name, category
FROM catalog.products
LIMIT 25;

Explore and inspect

Browse keyspaces, tables, primary keys, clustering columns, indexes, materialized views, grants, partition posture, storage posture, tombstone posture, and diagnostics.
Inspect table-like CQL results, partition metadata, primary-key targets, tracing payloads, storage warnings, and raw CQL details.

Diagnose, administer, and transfer

Review tracing, partition health, storage health, tombstones, index posture, cluster settings, grants, and driver or secure-bundle disabled reasons.
Preview grants, index and materialized-view operations, external-tool snapshot boundaries, and guarded row edit plans. Native CQL JSON Lines transfer uses the driver rather than cqlsh.
Import — Live. Cassandra streams native CQL JSON encodings through paged SELECT JSON and prepared INSERT JSON IF NOT EXISTS. Each row is applied independently and confirmed without overwriting an existing primary key. Formats: Cassandra CQL JSON Lines (native). Destinations: local file.
Export — Live. Cassandra streams native CQL JSON encodings through paged SELECT JSON and prepared INSERT JSON IF NOT EXISTS. Each row is applied independently and confirmed without overwriting an existing primary key. Formats: Cassandra CQL JSON Lines (native). Destinations: local file.
Backup — Unavailable. This datastore has no supported in-process or server API for a full native backup artifact. Formats: Native managed backup (native). Destinations: cloud uri, server path. Full Cassandra backup and restore require excluded vendor tooling or storage-backend access.
Restore — Unavailable. This datastore has no supported in-process or server API for a full native backup artifact. Formats: Native managed backup (native). Destinations: cloud uri, server path. Full Cassandra backup and restore require excluded vendor tooling or storage-backend access.

Transfers Center. Transfers Center shows a failed example transfer with its warning count, failure detail, retry control, and dismiss action. — **Transfers Center.** Transfers Center shows a failed example transfer with its warning count, failure detail, retry control, and dismiss action. Open full size

Capabilities and availability

Capability	Status	Notes
Native explorer	Available	Browse keyspaces, tables, primary keys, clustering columns, indexes, materialized views, grants, partition posture, storage posture, tombstone posture, and diagnostics.
Read queries	Available	Run live CQL reads with partition-key builders, deterministic Cassandra IntelliSense, bounded SELECT results, and native tracing identifiers.
Inline editing	Unavailable	Use a reviewed statement or the engine-native tool instead.
Diagnostics / administration	Guarded	Preview grants, index and materialized-view operations, external-tool snapshot boundaries, and guarded row edit plans. Native CQL JSON Lines transfer uses the driver rather than cqlsh.
Import / export / transfer	Guarded	Availability follows the authoritative runtime transfer manifest and shows a disabled reason when execution is not implemented.

Safety and limitations

Troubleshooting

Symptom	Resolution
Test connection fails or times out	Verify endpoint, port, TLS mode, proxy settings, service health, firewall rules, and network access. Keep the profile unsaved until the test explains the failure.
Explorer branches are empty or disabled	Confirm the selected database / container, refresh the branch, and grant the minimum metadata permissions described in the connection warning.
Run, edit, admin, or transfer is disabled	Read the visible disabled reason. Select a compatible target, turn off read-only only when authorized, or use the documented preview/export fallback.
The sample query fails or returns different columns	Replace the example names with objects from your Cassandra datastore, confirm the selected database / container, and keep the query bounded while you validate the result.

Prerequisites

Create the connection

Test and save

Open the native explorer

Select a scope

Run a bounded read

Inspect the result

Export when needed

Open diagnostics or transfers