| 941 | Percentage of optional columns in each base table | What is the percentage of optional columns (that permit NULLs) in case of each base table? It is better to prohibit the use of NULLs in as many columns as possible. Otherwise the results of queries may be misleading. | Sofware measure | INFORMATION_SCHEMA only | 2020-11-08 20:55 | MIT License | |
| 942 | Percentage of the total index storage size from the total database storage size (system catalog included) | Get overview of disk usage. | Sofware measure | system catalog base tables only | 2020-11-06 14:51 | MIT License | |
| 943 | Referential degree of a schema | Referential degree of a schema is defined as the number of foreign keys in the database schema. | Sofware measure | INFORMATION_SCHEMA only | 2020-11-13 11:30 | MIT License | |
| 944 | Referential degree of tables | This metric represents the number of foreign keys in a base table. | Sofware measure | INFORMATION_SCHEMA only | 2021-03-12 11:07 | MIT License | |
| 945 | Referential degree of tables (ver 2) | Find how many base tables are referenced from a base table by using foreign keys. | Sofware measure | system catalog base tables only | 2021-03-12 11:06 | MIT License | |
| 946 | The generic names (columns) (aggregate view)(2) | Find the number of too generic base table and view column names. Do not differentiate between base table and view columns to determine what name is generic. | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2023-01-18 16:42 | MIT License | |
| 947 | The longest names of database objects by object type | "Names in software are 90 percent of what make software readable. You need to take the time to choose them wisely and keep them relevant. Names are too important to treat carelessly. Names should not cause confusion." (Robert C. Martin, Clean Code) Names should be expressive. Find the TOP 3 longest (identifiers) names of user-defined objects by their type. These could be the first candidates of renaming in order to give to database objects better names. | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2024-12-21 16:37 | MIT License | |
| 948 | The longest referential paths | Find the longest referential paths between the tables regardless of the schema that contain the tables. | Sofware measure | system catalog base tables only | 2020-11-14 15:42 | MIT License | |
| 949 | The number and percentage of base tables where all the non-primary key columns are optional | Find the number and percentage of base tables where all the non-primary key columns are optional | Sofware measure | INFORMATION_SCHEMA only | 2020-11-08 19:57 | MIT License | |
| 950 | The number and percentage of base tables without CHECK constraints | Find the extent in which data integrity is checked at the database level. Find the number and percentage of base tables that do not have any associated CHECK constraints. | Sofware measure | INFORMATION_SCHEMA only | 2020-11-08 19:15 | MIT License | |
| 951 | The number and percentage of base tables without keys | Find the extent in which repeating rows are permitted in the database. Find the number and percentage (from the total number of base tables) of base tables that do not have the PRIMARY KEY constraint and also do not have any UNIQUE constraints. | Sofware measure | INFORMATION_SCHEMA only | 2020-11-08 19:16 | MIT License | |
| 952 | The number and percentage of different names of database objects | Names should be expressive. Find the number of different names used in a database as well as the number of named database objects, and the percentage of different names from all the names. Names should be expressive. Different objects should have different names. The smaller the percentage the less descriptive are the names in the database. Find the number of different names (identifiers) of user-defined database objects and compare it with the total number of database objects. The values could be used to compare different databases. | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2024-12-21 17:26 | MIT License | |
| 953 | The number and percentage of different names of database objects by object type | "Names in software are 90 percent of what make software readable. You need to take the time to choose them wisely and keep them relevant. Names are too important to treat carelessly. Names should not cause confusion." (Robert C. Martin, Clean Code) Names should be expressive. Different objects should have different names. The smaller the percentage the less descriptive are the names in the database. Find the number of different names (identifiers) of user-defined database objects by the object type and compare it with the total number of database objects with this type. The values could be used to compare different databases. | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2024-12-21 16:35 | MIT License | |
| 954 | The number and percentage of optinal columns in base tables | Find the number and percentage of optinal columns in base tables | Sofware measure | INFORMATION_SCHEMA only | 2020-11-08 21:17 | MIT License | |
| 955 | The number of base table columns based on data type | Find the number of base table columns based on data type. | Sofware measure | INFORMATION_SCHEMA only | 2020-11-19 15:30 | MIT License | |
| 956 | The number of base table columns by type category | Find the number of base table columns based on the category of data type that the columns have. | Sofware measure | INFORMATION_SCHEMA only | 2021-03-20 12:27 | MIT License | |
| 957 | The number of columns based on table type | Find the total number of columns in the different types of tables as well as average number of columns in the tables as well as minimal and maximal number of columns. | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2022-11-10 14:12 | MIT License | |
| 958 | The number of commented routines | Find the number of commented routines based on the way how the comments have been added (as a COMMENT object or as a comment in the routine body). | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2024-01-14 20:49 | MIT License | |
| 959 | The number of compensating actions of foreign key constraints | Find the number of compensating actions that are specified in case of foreign key constraints. | Sofware measure | system catalog base tables only | 2020-11-16 10:11 | MIT License | |
| 960 | The number of constraints by schema, by type, and in total | Find the number of constraints in different schemas. The number of constraints in a database gives an indication about the state of enforcing constraints at the database level. | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |