Random Data Generator – Generate test data in your database using configurable, random and reverse regular expression patterns.There is no limit to how many tables can be opened at once. Relational Data Browse – Use this simple tool to view data from multiple tables simultaneously, based on foreign keys.Use the layouts to browse and edit the schema visually, without having to write any SQL queries. Interactive Layouts – Divide complex schemas into separate layouts (groups of tables) for a better representation of the database.What is DbSchema?ĭbSchema boasts many of the must-have features you’d expect from a database GUI tool including: In this post we’ll show you how to get DbSchema connected to a YugabyteDB cluster so you can start reverse-engineering schemas, edit ER diagrams, browse data, visually build queries and even sync schemas. Yugabyte’s SQL API (YSQL) is PostgreSQL wire compatible. What’s YugabyteDB? It is an open source, high-performance distributed SQL database built on a scalable and fault-tolerant design inspired by Google Spanner. Because YugabyteDB is PostgreSQL compatible, getting DBSchema to work with a distributed SQL database is relatively simple. DbSchema is a well-rounded, visual database tool that supports over 40 databases from a single interface. You can run the UPDATE STATISTICS command for the table to generate data distribution.If you’re a database developer, you know the time saving value of being able to visually design, document and query SQL and NoSQL databases from a single UI. Resolution: The table does not have data distribution. Symptom: After executing dbschema -hd you only receive the dbschema header. Several lines of the output have been removed from the DISTRIBUTION sections for readability.ĭBSCHEMA Schema Utility INFORMIX-SQL Version 7.31.UD6Ĭopyright (C) Informix Software, Inc., 1984-1998 The column named sname in the same table had a distribution constructed on the same day in medium mode with a resolution of 2.5 and a confidence level of. Because the mode was high, there is no confidence level. The distribution was constructed on 8 July 2003 (which means that is the date on which the UPDATE STATISTICS HIGH was run). This example shows that the column named code of the table named state had a distribution constructed in high mode with a resolution of 0.5. If the mode was medium then the confidence level is also given. The dbschema command lists each distribution and gives the date of construction, the columns it was run on, the mode, and the resolution. The name of the table you want the distributions for.Įach time that UPDATE STATISTICS HIGH or UPDATE STATISTICS MEDIUM are run against a table, a data distribution is constructed, deleting any older distributions on the same columns. The name of the database that table is in. To get the information use the following syntax for the dbschema utility on the command line: The type of information you can obtain about the most recent UPDATE STATISTICS HIGH and UPDATE STATISTICS MEDIUM commands are the following: You can use dbschema to find out information about each of the latest UPDATE STATISTICS HIGH and UPDATE STATISTICS MEDIUM commands that were run against a table.
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