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Home > Delphi/C++ Components > Absolute Database > Features

Absolute Database

Overview | Features | Requirements | Testimonials | SQL Samples | Code Samples | Screenshots | See Also | Download | Order
Features
Ease of Deployment
  • No BDE, no DLLs
  • No special installation or configuration required
  • Database engine compiles right into EXE
  • Single-file database format
  • Database file could be merged with the application EXE file
High Speed
  • Advanced cache management and buffering architecture
  • Sophisticated SQL query and filter optimizer
  • Special optimized database engine for temporary results of SQL queries
  • Fast B*-Tree indexes with high-speed on thousands and on millions of records
  • Buffered transactions for batch inserts, updates and deletes
  • In-memory tables for fast operations with data loaded into memory
  • Optimization for read-only databases, such as databases on CD
  • High-concurrency design for multi-threaded applications
  • Ultra-fast in-memory tables
Multi-User
  • Zero-admin file-server
  • Automatic record and table locking
  • Automatic detection of changes made by other users
  • Configurable limit of concurrent connections
  • Easy switching between single-user and multi-user mode
  • Full transactions support with ReadCommited isolation level
SQL Support
  • SELECT with DISTINCT, INNER LEFT, RIGHT, FULL and OUTER JOIN, GROUP BY and ORDER BY clauses
  • CREATE TABLE, DROP TABLE, ALTER TABLE statements
  • CREATE INDEX, DROP INDEX statements
  • INSERT, UPDATE, DELETE statements
  • BETWEEN, IN, LIKE, IS NULL, EXISTS operators
  • Aggregate functions COUNT,SUM,MIN,MAX,AVG
  • Most of all SQL'92 arithmetic, logical, date-time and string functions and operators
  • Data types conversion by function CAST
  • SQL scripts (multiple statements separated by ';')
  • Parameters in queries
  • SELECT from several databases in one query
  • Correlated and non-correlated subqueries
Compactness
  • Small size of code added into the application by the database engine units
  • Small database file size achieved by customizable page size, compression of table metadata and other special means
  • Automatic free space recycling for data records, index pages, and BLOB blocks
  • Fast BLOB data compression
  • Short indexes for string fields
  • Low memory consumption
Compatibility
  • Support of most of TTable field data types, including BLOB fields
  • Full compatibility with standard DB-aware visual controls such as QuickReport, DBGrid, DBNavigator, DBImage, DBMemo, DBRichEdit and others
  • Calculated and lookup fields
  • Most of TDatabase, TQuery and TTable properties, methods and events
  • Support for the IProvider interface (TClientDataSet)
Functionality
  • Unicode support in String and Memo fields
  • Multiple-fields indexes with descending, ascending, case-sensitive and insensitive options
  • Shareable tables
  • Default values support
  • Min, max and not null constraints on field values
  • Export to SQL script (reverse engineering)
Security
  • Strong encryption of database file
  • Variety of supported encryption algorithms: Rijndael, the Advanced Encryption Standard (AES) winner 128 bit key, Rijndael 256 bit key, Blowfish 448 bit key, Twofish 128 bit key, Twofish 256 bit key, Square, Single DES and Triple DES
Reliability
  • Repair database in case of hardware failure or operating system error caused by another application
  • Auto-detect of database corruption and automatic repair of database file
Convenience
  • Table restructuring being performed in the easiest way keeping all the existing data
  • Data importing from and exporting to any dataset
  • Internationalization / localization support by use of current system locale
  • Displaying progress during potentially slow operations with the tables and databases
Utilities
  • DBImportExport utility to transfer your existing tables from database systems with BDE driver, such as Paradox, Interbase, Access, Oracle, SQL Server to Absolute Database format and vice versa.
  • Absolute Database Manager to manage a database easily and to perform all supported operations with tables and database file
  • With Absolute Database Manager you could also easily execute SQL queries
  • All utilities come with full source code and can be used as an advanced examples
Ease of Development
  • Full compatibility with TTable, TQuery, TSession and TDatabase components
  • Extensive Developer's Manual covering every development issue.
  • Large number of demos illustrating wide range of use cases
  • Prompt and responsive technical support
Cost-Effectiveness
  • 100% royalty-free, i.e. there is no additional licensing fees no matter how many times you deploy the application
  • Flexible licensing: source code and no source code versions, multi-developers licenses

Maximum Capacity Specifications

ObjectMaximum sizes / numbers
Multi-User EditionSingle-User Edition
Bytes per string field64,000 (also limited by page size)64,000 (also limited by page size)
Bytes per BLOB field2GB2GB
Bytes per index64,000 (also limited by page size)64,000 (also limited by page size)
Bytes per row65,400 (also limited by page size)65,400 (also limited by page size)
Columns per index10,00010,000
Columns per table65,00065,000
UNIQUE indexes or constraints per table30,00030,000
Database size32 TB (also limited by file system and OS)32 TB (also limited by file system and OS)
Identifier length (in characters)255255
Locks per connection2,147,483,647N/A
Rows per table2,147,483,6472,147,483,647
Tables per database2,147,483,6472,147,483,647
Bytes per page65,53665,536
Pages per database file2,147,483,6472,147,483,647
Connections per databaseMaximum value of configured connections before creating database file (up to 2,147,483,647)1
Records in transaction2,147,483,647 (also limited by available RAM)2,147,483,647 (also limited by available RAM)
In-memory table size2,147,483,647 (also limited by available RAM)2,147,483,647 (also limited by available RAM)


Product Info


Current version: 7.50
Released: September 29, 2014
Price: $ 149

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Our Customers



Testimonials

Thanks again for the superb tech support, I was worried I'd hit a brick wall this close to the finish line. Even working on the weekend... you guys rock!!!

Bob Boyd

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