. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.3. Automatic Two-phase Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 13. Database Validation and Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 13.2. Database Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 8.9. Stream of BLOB data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reading row data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Appendix A: External Data Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Appendix B: Data types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

onwards. -M[ETA_DATA] This switch causes your data to be ignored and not backed up or restored. In a backup, only the database meta data are backed up. When used in a restore, any data in the dump file creating database clones which are required to contain only the tables, indices etc but none of the data. -PAS[SWORD] Supplies the password for the username specified above. This need not be shows that the switch must be "suppress".  The log file must not exist. If it does, the backup or recovery operation will fail: tux> rm employee.log tux> gbak -backup employee.fdb employee.fbk -y employee

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8. Data Page — Type 0x05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8.2. Record Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.4. Examining The Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8.4.1. Compressed Data. . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.2. Protecting User Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2.2. Limiting the distribution of data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . physical access to a database file there is no effective way to prevent that user from reading all data (and metadata) within that file.  “Adequate” security is dependent on the level of security required

error_updating_sec_db An error occurred while updating the security database. -103 335544571 dsql_constant_err Data type for constant unknown -104 336003075 dsql_transitional_numeric Precision 10 to 18 changed from (expected %ld, encountered %ld) -171 335544618 return_mode_err Return mode by value not allowed for this data type -172 335544438 funnotdef Function %s is not defined -203 335544708 dyn_fld_ambiguous Ambiguous 335544568 text_subtype Implementation of text subtype %d not located. -204 335544573 dsql_datatype_err Data type unknown -204 335544580 dsql_relation_err Table unknown -204 335544581 dsql_procedure_err Procedure

while updating the security Firebird 2.1 Error Codes database. -103 335544571 dsql_constant_err Data type for constant unknown -104 336003075 dsql_transitional_numeric Precision 10 to 18 changed from -171 335544618 return_mode_err Return mode by value not allowed for this data type -171 335544873 array_max_dimensions Array data type can use up to @1 dimensions -172 335544438 funnotdef Function @1 is 335544568 text_subtype Implementation of text subtype @1 not located. -204 335544573 dsql_datatype_err Data type unknown -204 335544580 dsql_relation_err Table unknown -204 335544581 dsql_procedure_err Procedure

Note in V.2.1 Metadata Need to be Upgraded If your databases contain text BLOBs storing non-ASCII data then the backup/restore cycle is not enough to upgrade them to ODS 11.1. Please pay attention to the (V.2.1) Malformed UTF8 strings and text blobs are no longer allowed. This affects not just user data but also the metadata stored in the system tables. There is a metadata script to enable you to upgrade use the full syntax, you are expected to know what this restore mode actually means and have some recovery strategy available if the backup subsequently turns out to be unrestorable. Performance The following

. . 24 3. Data Types and Subtypes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.1. Integer Data Types . . . Floating-Point Data Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.2.1. Approximate Floating-Point Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.3. Fixed-Point Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

............................................................................... 366 ON EXTERNAL [DATA SOURCE] ........................................................................ 366 Особенности Зарезервированные и ключевые слова; • Типы и подтипы данных; • Операторы DDL (Data Definition Language — язык создания данных); • Операторы DML (Data Manipulation Language — язык обращения с данными); • Операторы управления NUMERIC(4) SMALLINT NUMERIC(4,2) SMALLINT (data * 102) NUMERIC(10,4) DOUBLE PRECISION в 1-ом диалекте BIGINT в 3-ем диалекте (data * 104) Внимание Всегда надо помнить